Question

a metre of wire costs rs 31/2. find the cost of 39/4 metres of wire​

Answer 1

Answer:

151.125 rs

Step-by-step explanation:

$1 \: meter \: = > \frac{31}{2} rs. \\ \\ \frac{39}{4} meter = > x \\ \\ x = \frac{39}{4} \times \frac{31}{2} \\ \\ x = \frac{39 \times 31}{4 \times 2} \\ \\ x = \frac{1209}{8} \\ \\ x = 151.125 \: rs$