Question
A purse has 10p, 20p and 50p coins in the ratio 9 : 6 :
5. If the total value is Rs. 55.20, find 75% of the number of 50p coins.Solution
Let counts of 10p, 20p and 50p coins be 9x, 6x and 5x. Total value: (0.1×9x) + (0.2×6x) + (0.5×5x) = 55.20 ⇒ 0.9x + 1.2x + 2.5x = 55.20 ⇒ 4.6x = 55.20 ⇒ x = 12 Number of 50p coins = 5x = 60 Required = 75% of 60 = 0.75×60 = 45
More Ratio Questions
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- What will come in place of (?), in the given expression.
(56 × 3) + (480 ÷ 6) = ? 4.5 times 5/0.9× 35% of 240 =?
(115 × 17 × 3)/(23 × 51) + ?3 = √169
If A = 0.84181818... then what will be the difference between the numerator and denominator of the lowest fraction form of A?
30% of 2200 +’?’ x 50 – 1020 = 11x 306 + (√ 2250 ÷ 0.1)
5 × 14 + 100 ÷ 4 = 62 + ?
√64 of √225 = √(25 + ?) X 12
{5% of (20 × 25) + 6% of (30 ×35)} ÷ 11 = ?
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