in a stationary shop,pen and pencil are in ratio 4:9 .if there are 100 pens, find a number of pencil

Answer 1

If you take the number of pencils as x, then the given ratio and the number of pens to pencils is proportional.

=> 4/9 = 100/x
=> x = (100/4)*9
=> x = 25*9
=> x = 175

Answer 2

Wrong answer is this

Answer 3

Wrong amswer