Question

75% of 40 students are good in Science. How many are not good at it?
(a) 10
(b) 5
(C) 7
(d) 9​

Answer 1

Answer:

a) 10

Hope it helps..........

Answer 2

Answer:

if , students good in math = 75%

Total no. of students= 40

then, percent are used to have 100.

Therefor, 75×40÷100

= 30

Then , no of students good in math = 30

Total no. Of student = 40

Therefore, Students not good in maths = total no. of students - no. Of students good in maths

= 40–30

= 10

The no. Of students not good in maths are 10