Question

of the 132 examinees of a certain school the ratio of successful to unsuccessful students is 9:2. If 4 more students passed what would have been the ratio of successful to unsuccessful students??​

Answer 1

Answer:56:5

Step-by-step explanation:

Let the no of successful students be 9x and no of unsuccessful students be 2x.

A/Q- 9x+2x=132

      or, 11x=132

      or, x=132/11

      or, x=12

no of successful or passed students=9x=9*12=108

when the no of passed students increased by 4=108+4=112

then, the no unsuccessful students=132-112=10

Ratio of successful to unsuccessful students= 112/10=56:5