Question
A bag contains 10-paisa, 20-paisa and 50-paisa coins in
the ratio of 9:8:10, respectively. If the total amount in the bag is Rs. 150, then find 50% of the number of 20-paisa coins in the bag.Solution
Let number of 10 paisa, 20 paisa and 50 paisa coins be ‘9x’, ‘8x’ and ‘10x’, respectively. ATQ, (0.1 × 9x) + (0.2 × 8x) + (0.5 × 10x) = 150 Or, 0.9x + 1.6x + 5x = 150 Or, 7.5x = 150 So, x = 20 So, number of 20 paisa coins = 8x = 160 Therefore, required number of coins = 0.5 × 160 = 80
More Economy and Banking and Finance Static Concepts Questions
- Simplify the following expression:
(48% of 800 × 3) ÷ 6 + 440 ÷ √25 - 14² ? = √2704 ÷ (25% of 104) + 73
3/7 of 686 + 133(1/3)% of 33 – 69 =?
15.50% of 6240 – 426.31 = ?
- What will come in place of (?) in the given expression.
(25% of 320) + (15% of 240) = ? - What will come in place of (?) in the given expression.
(⅗ of 450) – (⅖ of 300) = ? 125% of 129 ÷ 43 × 28 ÷ 7 = ? ÷ √16
(630 ÷ 18 + 24 of 25) ÷ 5 = ?
- What will be come in place of (?) in the given expressions.
√324 + (18 × 5) – 72 ÷ 8 = ? 120% of 400 + ?% of 520 = 1000
