Question

5 grams of an alloy contains 15/4 grams copper and the rest is nickel. Find the ratio by weight of nickek to copper.

Answer 1

Hi

Weight of the alloy = 5g

Weight of the copper = 15/4 g

Let the weight of the Nickle = x g

According to the problem given ,

x = 5 g - 15/4 g

x = ( 20 - 15 )/ 4

x = 5/4 g

Therefore ,

Weight of the Nickle = x = 5/4 g

Required ratio = ( Wt of Nickle)/(Wt of coppers )

= ( 5/4 g )/ ( 15/4 g )

= 5/15

= 1/3

= 1 : 3

I hope this helps you.

: )