Question
A bag contains 10-paisa, 20-paisa and 50-paisa coins in
the ratio of 8:6:7, respectively. If the total amount in the bag is Rs. 44, then find 25% of the number of 20-paisa coins in the bag.Solution
Let number of 10 paisa, 20 paisa and 50 paisa coins be ‘8x’, ‘6x’ and ‘7x’, respectively. ATQ, (0.1 × 8x) + (0.2 × 6x) + (0.5 × 7x) = 44 Or, 0.8x + 1.2x + 3.5x = 44 Or, 5.5x = 44 So, x = 8 So, number of 20 paisa coins = 6x = 48 Therefore, required number of coins = 0.25 × 48 = 12
What will come in the place of question mark (?) in the given expression?
35 X 72 + 35 X 28 = ? X √16
1885 ÷ 64.98 + 7.29 + ? = 69.09
Simplify: 48 ÷ 4 × 2 + 5 × (7 − 3)
What will come in the place of question mark (?) in the given expression?
(352 - ?) ÷ 8 = 2.5 X 40 - 444 ÷ 6
√1936 + √3025 = ? % of 220
What will come in place of (?) in the given expression.
(15) ² - (13) ² = ?- What will be come in place of (?) in the given expressions.
√324 + (18 × 5) – 72 ÷ 8 = ? 89 ÷ 512 × (1/64) = (23)?
Find the simplified value of the given expression.
(4.5 × 20 – 2.5 × 8) ÷ 10...
