Question

in a white metal there are 20 parts tin, 3 parts copper and 2 parts antimony their percentage are

Answer 1

The total parts are 25.

This represents 100%

Percentage for tin=20/25 × 100=80%

Percentage for copper =3/25 × 100=12%

Percentage for antimony =2/25 × 100%=8%

Answer 2

Solution :-

Total number of parts = 25

These 25 parts represent 100 % in all.

1) Percentage of Tin = (20*100)/25

= 2000/25

= 80 %

2) Percentage of Copper = (3*100)/25

= 300/25

= 12 %

1) Percentage of Antimony = (2*100)/25

= 200/25

= 8 %

So, The respective percentages of Tin, Copper and Antimony are 80 %, 12 % and 8 %

Answer.