Question

Total students 150.students passed in maths is 50.students failed in chemistry is 40 .total students passed in both is 2o .then find how many students passed in both subjects

Answer 1

I hope 20 students failed

failed in maths = 150 - 50 = 100

Failed in chemistry = 40

Falied in both = 20

So total failed = 140 because (20 children come in these numbers, so no need to count them again)

So passed in both = 150 - 140 = 10