A money box contains one rupee and two-rupee coins in the ratio 5:6. If the total value of the coins in the money box is Rs.85. Find the number of two-rupee coins.

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answer is D.

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Detailed Solution

Concept: A ratio describes the quantity of one object in relation to another.When two quantities of the same units are compared, the ratio is what shows how much of one quantity is included in the other.
Let the number of one rupee coins be

and that of two rupee coins be

.
Now, value of

one rupee coins

and
value of

two rupee coins = Rs.

Rs.

Given, value of coins

So, the number of two rupee coins

Hence, the correct answer is option 4

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