Percentage

1

In an examination, 80% of the students passed in English, 85% in Mathematics and 75 % in both English and

Mathematics. If 40 students failed in both the subjects , find the total number of students.

A. 350
B. 375
C. 400
D. 450
E. ` root8(2)`

2

In an examination 35% of total students failed in Hindi , 45%  failed English and 20% in both .Find the percentage of

those who passed in both the subjects .

A. 40%
B. 42%
C. 43%
D. 44%

3

Due to a reduction of `6 1/4`% in the price of sugar , a man is able to buy 1 kg more for Rs. 120. Find the original and reduced  rate of sugar .

A. 6.50 kg
B. 7 kg
C. 7.25kg
D. 7,50 kg

4

How many kg of pure salt must be added to  30kg of 2%  solution of salt and water  to increase it to a 10% solution ?

A. `1 2/3`
B. `2 1/2`
C. `2 1/3`
D. `2 2/3`

5

If A's  salary is 20%  less than B's salary, by how much  percent is B's salary more than A's

A. 25%
B. 26%
C. 27%
D. 28%