Question

A mortar consists of 5 parts of lime to 7 parts of sand. Find the percentage composition of the mortar.

Answer 1

Mortar consists= $\frac{5 parts of lime}{7 parts of sand}$=$\frac{5}{7}$

Percentage composition=$\frac{5}{7}$ × 100 => $\frac{500}{7}$

=> 71.428 % => 71.43%