Study the histogram that shows the marks obtained by students in Maths. Find the ratio between no. of students obtained marks less than 250 and more than 400.

12 : 5 15 : 7 15 : 8 12 : 7

15 : 7

No. of students having marks less than 250 = 45 + 30 = 75 No. of students having marks more than 400 = 35 Required ratio = 75 : 35 = 15 : 7