Question
A certain sum of money will be doubled in 25 years at
the rate of simple interest percent per annum is:Solution
SI = (P × R × T)/100 Amount, (A) = P + SI Let P be the principal. SI = 2P – P = P ⇒ P = (P × R × T)/100 ⇒ P = (P × R × 25)/100 ⇒ R = 100/25 = 4%
Sum of squares of three consecutive numbers is 1454. Find the sum of first and third number.
Product of two consecutive positive even numbers is 624. Find the sum of the digits of the two numbers.
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Sum of all positive integers from 1 to 100 is
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In a division sum, the divisor is 12 times the quotient and also 5 times of the remainder. If the remainder is 48, then the dividend is:
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