The given histogram represents the marks of students in Science test of class 10th.  The total number of students is 350.

The no. of students who scored marks b/w 120 and 160 is what percentage of the no. of students who scored marks b/w 140 and 180?

136.84

No. of students who scored marks b/w 120 and 160 = 75 + 55 = 130

No. of students who scored marks b/w 140 and 180 = 55 + 40 = 95

Required percentage → \(\frac{130}{95}\) × 100 = 136.84%