I have 1, 2 and 5 coins. The total number of
coins of 1, 2 and 5 all put together are 85. Also,
the sum of amount formed from *1 rs coins and
coins is equal to amount formed from *2 rs coins. If
the number of 5 rs coins is twice the number of 1
coins, then the number of 2 coins.
30 points please fast and cirrect no wrong answer
Answers
Given : The total number of coins of ₹1, ₹2 and ₹5 all put together are 85.
Also, the sum of amount formed from 1 coins and 5 coins is equal to amount formed from 2 coins.
the number of 5 coins is twice the number of 1 coins
To Find : the number of Rs 2 coins
Solution:
1 Rs coin = A
5 Rs coin = 2A ( Rs 5 coins is twice the number of Rs 1 coins, )
2 Rs coin = 85 - ( A + 2A) = 85 - 3A
sum of amount formed from 1 coins and 5 coins is equal to amount formed from 2 coins.
=> 1 * A + 5 * 2A = 2 ( 85 - 3A)
=> 11A = 170 - 6A
=> 17A = 170
=> A = 10
1 Rs coin = 10
5 Rs coin = 20
2 Rs coin =55
the number of Rs 2 coins is 55
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