Question
An amount of Rs. ‘P’ was invested at an interest
rate of ‘R%’ per annum, compounded annually. After 2 years, the compound interest earned was Rs. 2700 and the simple interest earned was Rs. 2400. What is the value of ‘P’?Solution
ATQ,
Simple interest for 1 year = 2400 ÷ 2 = Rs. 1200 Difference between compound interest and simple interest after 2 years = 2700 – 2400 = Rs. 300 So, R = (300 ÷ 1200) × 100 = 25% Now, P = 1200 ÷ 0.25 = Rs. 4800
- What should be subtracted from 64 and 40 to make the ratio of resulting numbers 3:1?
When a number is increased by 20% then the number obtained is 36 less than thrice the original number. Find the original number.
What is the value of 1² + 3² + 5² + 7² + 9² ................ 19²?
Aman is forming pairs of two natural numbers, A and B, such that their product equals 350. He wants to determine how many such pairs exist where A and B...
The sum of two numbers is 30 while the difference between these two numbers is 6. What is 50% of the product of the two numbers?
There are 120 candies, 120 chocolates, and 200 sweets to be distributed among groups A, B, and C, where each student in group A receives 5 candies, each...
The number of present boys to girls is in the ratio 2:1. If 15 girls are absent and they form 25% of the total class, and no boy is absent, then find th...
Some pencils were distributed among (x + 2) students such that each student received 10 pencils. If there had been 5 students more, then pencils receive...
There are three numbers 'a', 'b' and 'c' (a < b < c) such that 'b' is equal to the average of 'a' and 'c'. 70% of 'c' is equal to 'a' and the difference...
- Average of five consecutive odd numbers is 17. What is the largest of the given five numbers?
