Question

In a school examination, in which 3000 students appeared, 30% failed in mathematics, 25%
failed in English while 20% failed in both the subjects. The number of students who passed in
either of the subjects but not in both, is

Answer 1

Answer:25 per.

Step-by-step explanation:

Maths=30

English =25

Both subject =20

Total=75

Left =100-75=25

Answer 2

Answer:

If 10% failed both, then 90 % either passed only English or Only Maths or Both.

The area enclosed within both the circles should add up to 90. English + Maths + both = 70 + 80 = 150. The excess 60 (150–90=60) is due to the overlapping region. So 60% passed both.

60% = 144

10% = 24

100% = 240

Step-by-step explanation:

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