Answers

2016-03-09T18:33:43+05:30
let the forces be = 5x & 7x
let the area be = 4x & 5x 
therefore pressure 1 = force / area = 5x / 4x = 5/4 Pa
pressure 2 = force /area = 7x / 5x = 7/5 Pa
therefore ratio of pressure 1 and pressure 2 = 5/4/7/5 = 5/4*5/7 = 25/28
therefore the answer = 25 : 28 

i hope it helps............ 
1 4 1