Question
A sum of money amounts to Rs. 5,320 in 4 years at simple
interest at 8% per annum. What is the principal?Solution
Let principal = P SI = (P × R × T) / 100 = (P × 8 × 4)/100 = 0.32P Amount = P + SI = P + 0.32P = 1.32P Given: 1.32P = 5,320 ⇒ P = 5,320 / 1.32 = 5320 × (100 / 132) = 532000 / 132 132 × 40 = 5,280; remainder 40 ⇒ approx 40.3 → check exact: Simplify 532000/132 = (5320/1.32) = 4,200 So P = Rs. 4,200
Find the sum of the first 45 natural numbers.
What should come in place of the question mark (?) in the following question?
956 × 753 = ?
- A list contains ten numbers. The average of the initial three values is 14, and the last five numbers have an average of 23. If the middle two numbers (4th...
Find the remainder when (5)100 is divided by 7
The product of two positive numbers is 432. If one number is three times the other, find the difference between the two numbers.
A waiter income consist of his salary and tips. During one week his tips were 4/5 of his salary. What portion of his income came from tips?
In a two digit positive number, the digit in the unit’s place is equal to the square of the digit in ten’s place, and the difference between...
find the value of 5+55+55+555+…………..+ n terms
In a question of division, if dividend is 21 times of remainder and quotient is 1/2 of divisor, if remainder is least multiple of 2 and 5 both then find...
The mean of 12 numbers is 15. When two additional numbers, x and y , are included, the average increases by 1. Given that the difference between x and y...
