Question

A number when added to 3½ times of it gives 72. Find the number.
(a 24 (b) 16
(c) 84 (d) 42​

Answer 1

answer

B

step step explanation

let the number be A

A+ 3 1/2 X A = 72

A + 7/2 X A = 72

(2 A + 7 A) /2 = 72

9 A = 144

A = 144/9

A = 16

so option (B)