Question

In an examination, 34% students failed in english, 44% failed in hindi, while 22% failed in both. if the total number of passed students is 660, how many students did appear for the examination?

Answer 1

Let total student = 100%
Failed in english = 34%
Failed in hindi = 44%
Failed in Both = 22%
Total failed = {( 34+44) - 22} = 78-22= 56%
if 56% got failed then passed = 44%
because total 100%.
total passed = 660
means 44% = 660
then 100% = (660/44)×100
= 15×100 = 1500
total student = 1500.