৭৫২১
The simple interest on a certain sum at 6% p.a. is Tk. 360 in 1 year. What will be the additional interest earned in 1 year if the rate increases to 7% p.a. on the same sum?
উত্তর
Tk. 60
৭৫২২
What is the difference between simple and compound interest at 10% per annum on a sum of Tk. 5,000 at the end of 2 years?
উত্তর
Tk. 50
৭৫২৩
A mixture contains copper, zinc, and tin in the ratio 2 : 3 : 5. If the total weight of the mixture is 50 grams, how many grams of tin are there in the mixture?
উত্তর
25 grams
৭৫২৪
The simple interest on a sum of money is Tk. 720 in 12 years. If the principal is doubled after 6 years, what will be the total interest at the end of 12 years?
উত্তর
Tk. 1080
৭৫২৫
A man bought some sugar and salt for Tk. 440. The ratio of the weights of sugar and salt is 5 : 2, and the price per unit weight of sugar and salt is in the ratio 6 : 7. What is the price of the total sugar?
উত্তর
Tk. 300
৭৫২৬
At what rate of compound interest per annum will a sum of Tk. 1600 becomes Tk. 2304 in 2 years?
উত্তর
20%
৭৫২৭
In how many years will Tk. 750 amount to Tk. 900 at 4% simple interest per annum?
উত্তর
5 years
৭৫২৯
Tk. 1,000 becomes Tk. 1,200 in 4 years at a certain rate of simple interest. If the rate of interest is increased by 2%, what amount will Tk. 1,000 become in 4 years?
উত্তর
Tk. 1280
৭৫৩০
The ratio of milk and water in a solution is 7 : 4. After adding 8 liters of water, the ratio of milk and water becomes 3 : 2. Find the final amount of water in the solution.
উত্তর
56 liters