Question

There are some 50p coins and 1 rupee coins in a bag. If the coins are equal in number and total amount in the bag is 300 rupees,then find the number of 50p and 1 rupees coins in the bag

Answer 1

Let No. of coins be x

We are given, x + x/2 = 300
                   = 3x/2 = 300
                     so, x = 200

So, there are 200 50p coins as well as 200 1 rupee coins.

Answer 2

let the number of 50 paisa coin = n
let the number of 1 rupee coin = n
50 paisa = x
1 rupee = y
now,
nx + ny = 300
n ( x + y ) = 300
n ( y/2 + y ) = 300
n ( 3y/2) = 300 ( as x = y/2)
n = 300 × 2/3 ( putting y = 1 )
n = 200. ANSWER
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