Question

Hi guys please help...

Answer 1

Failed in science = 24%

Failed in maths = 27%

Failed in both maths and science = 15%

1

So Failed in science - total failed = 24 - 15 = 9% failed only in science

Failed in maths - total failed = 27 - 15 = 12% failed in only maths

2

So total failed = 15 + 9 + 12 = 36%

Total passed = 64%

3

448 passed in both the subject

Let appeared students = x

So, 64/100 of x = 448

x = (448 * 100) / 64

x = 44800 / 64

x = 700