Question

A purse contains rs.455 in the form of rs.1, rs.2, and rs.5 coins in the ratio of 2:4:5. What is the number of rs.2 coins in the purse?

Answer 1

Answer:

52

Step-by-step explanation:

Lets find the denominations first.

Ratio of rs 1,2 and 5 rs coins are 2:4:5 respectively.

Multiplying the ratios with their denominations we get 2:8:25

Now,  Lets the ratio multiplying factor be X.

After multiplying the ratio factor and adding we get the total rs value.

ie. 2X+8X+25X= 455

After solving for X we get, X=13.

So now 2 rs denomination is 8X= 8*13 rs= 104 rs.

To find number of 2 rs coins we have 104/2= 52 coins.