By selling an article, Shila earned a profit equal to 1/4 th of the price she bought it for. If she sod it at TK.375, what was the cost price?

১

If 10 % of x is equal to 25% of y, and y =16 what is the value of x?

6.4

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

সমাধান

·10x = ·25yx = ·25×16·10 = 40

২

The area of circle A is 6.25 sq. in. If radius of the circle is doubled, what is the new area of circle A in sq. in?

5 pi

12.5 pi

25 pi

39.0625 pi

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

25 pi

সমাধান

Let, A এর radius = r ∴πr2 = 6·25π∴r = 2·5 Double হওয়ার পর 2π = 2·5×2 = 5 ∴ নতুন ক্ষেত্রফল π52 = 2·5π

৩

what is the H. C.F of the numbers 36 , 54 and 90?

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

সমাধান

H. C. F মানে গ. সা. গু 36 = 2 × 2 × 3 × 3 54 = 2 × 3 × 3 × 3 90 = 2 × 3 × 3 × 5 গ. সা. গু = 2 × 3 × 3 = 18

৪

When Mr. Sen imports some raw materials he has to pay 7% import duty on the portion of the total value of the item in excess of TK. 1000. If the amount of import duty he paid was TK. 87.50 then what was the value of the raw material that he imported?

TK. 1,250

TK.2,250

TK. 2,500

TK. 2,750

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

TK.2,250

সমাধান

Let the value of the raw material in excess of Tk 1000 be T. Then, 7% of T = 87.5 or, 7/100 of T = 87.5 or, T = 87.5×100/7 = 1250 TK So, value of the raw amterial = 1000 + 1250 = 2250 TK

৫

Rahim, Karim and James paid a total TK. 45 for their dinner at a restaurant. If Rahim paid of the total amount, Karim paid TK. 17 and James paid the rest then what fraction of the total amount did James pay?

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

৬

A wholesaler bought 1200 pens for TK 18 each. He sold 60% of the pens for TK. 30 each and remaining for TK. 15 each. What was his average profit per pen?

TK. 4

TK. 6

TK. 12

TK. 2003

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

TK. 6

সমাধান

Total cost = 1200×18 = 21600 TK. Revenue from 60% pens = (60% of 1200)×30 = 720×30 = 21600 TK Revenue from the rest of pens (40%) = (40% of 1200)×15 = 7200 TK Total revenue = 21600 + 7200 = 28800 TK Profit = 28800 - 21600 = 7200 TK. Profit per pen = 7200/1200 = 6 TK

৭

f(x) = -1, for all x>0. If f(a) = -1 and f(ab) = -1 then b =?

-1

-3

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

সমাধান

f(a)=-1f(ab)=-1then, ab=-1×1so f(b)=1

৮

The next number in the sequence , 3, 6 m 11, 18, 27,.... is

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

সমাধান

প্রতিটি সংখা পাওয়া যাবে এর পূর্ববর্তী সংখ্যার সাথে কিছু সংখ্যা যোগ করে। এটা কিভাবে বের করে দেখুন - 3, 6, 11, 18, 27 3, 5, 7, 9 তাহলে পরবর্তী সংখ্যাটি পওয়া যাবে 27 + 11 = 38

৯

The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

সমাধান

এটি Solve করতে দ্রুত ছবিটি একে ফেলুন 6টি।

১০

The number of different signals which can be given form 6 flags of different colours taken one or more at a time is

1958

1956

উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।

বিস্তারিত

উত্তর

1956

সমাধান

6c1×1! + 6c2×2! + 6c3×3! + 6c4×4! + 6c5×5! + 6c6×6! = 1956 যেহেতু one or more at a time বলছে তাই নিজেদের মধ্যে ও factorial দিয়ে গুণ হয়েছে।

অনুসন্ধান করুন

বিস্তারিত সমাধান

By selling an article, Shila earned a profit equal to 1/4 th of the price she bought it for. If she sod it at TK.375, what was the cost price?

If 10 % of x is equal to 25% of y, and y =16 what is the value of x?

The area of circle A is 6.25 sq. in. If radius of the circle is doubled, what is the new area of circle A in sq. in?

what is the H. C.F of the numbers 36 , 54 and 90?

When Mr. Sen imports some raw materials he has to pay 7% import duty on the portion of the total value of the item in excess of TK. 1000. If the amount of import duty he paid was TK. 87.50 then what was the value of the raw material that he imported?

Rahim, Karim and James paid a total TK. 45 for their dinner at a restaurant. If Rahim paid of the total amount, Karim paid TK. 17 and James paid the rest then what fraction of the total amount did James pay?

A wholesaler bought 1200 pens for TK 18 each. He sold 60% of the pens for TK. 30 each and remaining for TK. 15 each. What was his average profit per pen?

f(x) = -1, for all x>0. If f(a) = -1 and f(ab) = -1 then b =?

The next number in the sequence , 3, 6 m 11, 18, 27,.... is

The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is

The number of different signals which can be given form 6 flags of different colours taken one or more at a time is

কোর্স

অনুসন্ধান করুন

বিস্তারিত সমাধান

By selling an article, Shila earned a profit equal to 1/4 th of the price she bought it for. If she sod it at TK.375, what was the cost price?

সম্পর্কিত বিষয় সমূহ

সম্পর্কিত অন্যান্য প্রশ্ন

If 10 % of x is equal to 25% of y, and y =16 what is the value of x?

The area of circle A is 6.25 sq. in. If radius of the circle is doubled, what is the new area of circle A in sq. in?

what is the H. C.F of the numbers 36 , 54 and 90?

When Mr. Sen imports some raw materials he has to pay 7% import duty on the portion of the total value of the item in excess of TK. 1000. If the amount of import duty he paid was TK. 87.50 then what was the value of the raw material that he imported?

Rahim, Karim and James paid a total TK. 45 for their dinner at a restaurant. If Rahim paid of the total amount, Karim paid TK. 17 and James paid the rest then what fraction of the total amount did James pay?

A wholesaler bought 1200 pens for TK 18 each. He sold 60% of the pens for TK. 30 each and remaining for TK. 15 each. What was his average profit per pen?

f(x) = -1, for all x>0. If f(a) = -1 and f(ab) = -1 then b =?

The next number in the sequence , 3, 6 m 11, 18, 27,.... is

The number of parallelograms that can be formed from a set of four parallel lines intersecting another set of three parallel lines is

The number of different signals which can be given form 6 flags of different colours taken one or more at a time is