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Question
A bag contains Rs 1800 in the form of Rs 1 , Rs 2 and Rs 5 ooins. The ratio of the number of the respective coins is 3: 7: 11. Find the total number of ooi ns in the bag.
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Solution
Let the number of Re 1, Rs 2 and Rs 5 coins be 3x, 7x and 11x
The sum of their value =
3x+ (2 × 7x) + (5 × 11x) = Rs 1800
3x + 14x + 55x = 1800
72x = 1800
x = 25
3x =3 × 25 = 75
7x = 7 × 25 = 175
11 x = 11 x 25 = 275
total = 75 + 175 + 275 = 525
Total number of coins = 525
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