Question

In a class, the ratio of the number of students having height
below 4 ft to the ones having height equal to 4 ft is 3:5. The ratio of students having
height equal to 4 ft to the ones having height above 4 ft is 10:7.
(a) What is the ratio of the number of students having height
above 4 ft to the number of students having height below 4 ft
to the number of students having height equal to 4 ft?
(b) If there are 20 students having height equal to 4 ft in the
class. How many students are there in the class?

Answer 1

Answer:

There are 60 students in the class