7. 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 rupee's85, find the number of two-rupee coins.
Answers
Answered by
1
Answer:
30
Step-by-step explanation:
Let the number of one rupee coins be 5x and that of two rupee coins be 6x.
Now, value of 5x one rupee coins = Rs. 1×5x= Rs. 5x and
value of 6x two rupee coins = Rs. 2×6x= Rs. 12x
Given, value of coins = Rs. 85
⇒5x+12x=85
⇒17x=85
⇒x=5
So, the number of two rupee coins =6×5=30
Hence, there are total 30 two rupee coins in the money box.
Answered by
1
Step-by-step explanation:
Let the number of one rupee coins be 5x and that of two rupee coins be 6x.
Now, value of 5x one rupee coins = Rs. 1×5x= Rs. 5x and
value of 6x two rupee coins = Rs. 2×6x= Rs. 12x
Given, value of coins = Rs. 85
⇒5x+12x=85
⇒17x=85
⇒x=5
So, the number of two rupee coins =6×5=30
Hence, there are total 30 two rupee coins in the money box.
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