৩১৬৮২
১৩ টি সংখ্যার যোগফল ৪৬২ , প্রথম ৪টির গড় ৫২ ও শেষ ৫ টির গড় ৩৮ হলে ৫ম সংখ্যাটি কত?
উত্তর
64
৩১৬৮৩
The simple interest received on a sum of money at the end of 10 years is two times of the principle. At the same rate of interest, what would be the ratio of principal and compound interest received at the end of two years?
উত্তর
25 :11
৩১৬৮৪
If 2 kg of metal, of which 1/3 is zinc and the rest is copper s, be mixed with 3 kg of metal , of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?
উত্তর
17 : 43
৩১৬৮৫
A shopkeeper earns a profit of 12% on selling a book at 10% discount on the printed price. The ratio of the cost price and the printed price of the book is -
উত্তর
45: 56
৩১৬৮৬
In what ratio must a grocer mix two varieties of pulses costing Tk. 15 and TK. 20 per kg respectively so as to get a mixture worth Tk. 16.50 kg?
উত্তর
7 : 3
৩১৬৮৭
Three partners shared the profit in a business in the ratio 5: 7: 8. They had partnered for 14 months, 8 months and 7 moths respectively. What was the ratio of their investments?
উত্তর
20 : 49 : 64
৩১৬৮৮
If 40% of a number is equal to two -third of another number, what is the ratio of first number to the second number?
উত্তর
5:3
৩১৬৮৯
Kalam has three daughters; Shaila , Meena and Tina. Three years ago, when Kalam was twice as old as Tina , he was 30 years older than sMeena Now he is 47 years older than Shaila In 4 years. Shaila will be half as old as Tina What is the sum of the current ages of Kalam and his three daughters?
উত্তর
138
৩১৬৯০
A man starts climbing a 11 m high wall at 5 pm. In each minute he climbs up 1m but slips down 50 cm. At what time will he climb the wall?
উত্তর
5 : 21 pm