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

Find the ratio of total no. of students whose marks are less than 120 and total no. of students whose marks are more than 120?

33 : 37

Total no. of students who scored less than 120 = 60 + 45 + 32 + 18 + 10 = 165

Total no. of students who scored more than 120 = 75 + 55 + 40 + 15 = 185

Ratio = 165  :  185

              33  :  37