Question
A sum of money placed at simple interest becomes Rs. 14,400
in 4 years and Rs. 18,000 in 7 years. What is the initial amount invested?Solution
ATQ,
Interest earned in 3 years = 18,000 - 14,400 = Rs. 3,600
Interest earned in 4 years = (3,600 / 3) × 4 = Rs. 4,800
So, amount invested = 14,400 - 4,800 = Rs. 9,600
More Simple and compound interest Questions
25% of 1000 + 10% of 150 – 22 × ? = 45
What will come in the place of question mark (?) in the given expression?
(11/45) of 225 + 3 X 75 = ? X (72 ÷ 6 + 4)
(8.4 × 6.5 ×2.52 )/(5.04 ×3.25 ×2.1) = ?
- Simplify the following expression:
16 + [17 - (8 + 11) + 6 - 3] ÷ 0.2 (18 × 9 ÷ 6) × 3 = ?
1024 ÷ 16 + 800 ÷ √64 + ? = 200 * 2
315 ÷ 9 + 23 × 3+ 22 = ?× √441
65% of 102 + 14 = ? – 20