Question

In a class of 40 students 1/4 of the total students are good at swimming 3/8 at table tennis and the rest are good archery.how many students are good at archery

Answer 1

Answer:

15

Step-by-step explanation:

let students that are good at archery be x

$\frac{1}{4} \times 40 + \frac{3}{8 } \times 40 + x = 40 \\ \\ 10 + 15 + x = 40 \\ 25 \ + x = 40 \\ x = 40 - 25 \:therefore = x = 15$