২২৮৭১
An employer pays 3 workers X, Y and Z a total of Tk. 36,600.00 a week. X is paid 125% of the amount Y is paid and 80% of the amount Z is paid. How much does X make a week?
উত্তর
12,000
সমাধান
X = 125%Y X = 80%Z X = 125×Y100 X = 80×Z100 X = 5Y4 X = 4Z5 Y = 4X5 Z = 5X4 X + Y + Z = 36600 X + 4X5 + 5X4 = 36600 20X + 16X + 25X20 = 36600 X = 12000 (Ans.)
২২৮৭২
The width of a rectangular field is 1/3 as long as its length. What is the area of the field if the length of the field is 120 yards?
উত্তর
4,800 square yards
সমাধান
length = 120 yardswidth = 120 * ⅓ = 40 yardsarea of rectangular fields = 120*40 = 4800 square yards
২২৮৭৩
A farmer has two rectangular fields. The larger field has twice the length and four times the width of the smaller field. If the smaller field has area K, then the area of the largest field is greater than the area of the smaller field by what amount?
উত্তর
7K
২২৮৭৪
Three individuals contributed Tk. 8,000.00 each toward the puchase of a computer. If they bought the computer on sale for Tk. 19,500.00 plus 10 percent sales tax, how much money should be refunded to each individual?
উত্তর
Tk. 850
সমাধান
Total contribution = 3 x 8000 = 24000 TK
Cost of computer = 19500 + 10% of 19500 = 19500 + 1950 = 21450 TK.
Excess contribution = 24000 - 21450 = 2550 TK.
Refund to each = 2550/3 = 850 TK.
২২৮৭৫
Of the following, which is greatest?
উত্তর
126/250
সমাধান
12=0.5 715=0.46 49100=0.49 126250=0.504last one is largest
২২৮৭৬
Jamil lives 4 kilometers due west of Rehana's house. Ajit lives 6 kilometers due north of Rehana's house and 4 kilometers due west of john's house. What is the straight line distance in kilometers from Jamil's house to John's house?
উত্তর
10
২২৮৭৭
When a certain number is divided by 7, the remainder is 0. But the remainder is not 0 when the number is divided by 14, then the remainder must be ----
উত্তর
7
সমাধান
The number should be multiple of 7
Let, the number be 21
Now, (21/7) = 3, reminder 0
And (21/14) = 1, reminder 7
২২৮৭৮
If 18 identical machines required 40 days to complete a job, how many fewer days would have been required to the job if 6 additional machies of the same type had been used from the beginning?
উত্তর
10
সমাধান
১৮ টা মেশিনের লাগে = ৪০ দিন ১ টা মেশিনের লাগে = ৪০ * ১৮ দিন(১৮+৬) বা ২৪ টা মেশিনের লাগে = ৪০ * ১৮২৪ = ৩০ দিনঅতএব, দিন কম লাগবে = ৪০ - ৩০ = ১০ দিন (উত্তর)
২২৮৭৯
If the product of 3 consecutive integers is 120, then the sum of the integers is
উত্তর
15
সমাধান
Let the first integer be x - 1. Then the next two integers would be x and x + 1. So:
(x - 1)× x × (x + 1) = 120
= > (x² - 1)x = 120
= > x³ - x = 120
∴x = 5 , Check 5³ - 5 = 125 - 5 = 120.
So, x = 5. The other two numbers are 4 and 6 which are equal to x - 1 and x + 1 respectively.
Now the total of these numbers is 3x = 3×5 = 15.
২২৮৮০
One dozen eggs and ten pounds of apples are currently the same price. If the price of a dozen eggs rises by 10% and the price of apples goes up by 2%, how much more will it cost to buy a dozen eggs and ten pound of apples?
উত্তর
6%
সমাধান
As same price,
Let one dozen eggs = 100
ten pounds of apples = 100
So total amount 200
Eggs price rises 10% = 100 + 10 = 110
Apples price rises 2% = 100 + 2 = 102
Rises total amount 212
Just rises amount 12
So cost price will 12×100/200 = 6%
Ans: 6%