Question

40% of 50 students of a class are good at Science. How many students are not good at Science ? *

Answer 1

Given that :-

• 40% of 50 students of a class are good at Science.

To find :-

• How many students are not good at Science ?

Let us assume :-

• Good at Science students are x.
• Not good at Science students are y.

Finding the Numer of x.

$\dashrightarrow$ x = 40/100×50

$\dashrightarrow$ x = 2000/100

$\dashrightarrow$ x = 20.

Hence,

• The total number of Good at Science students are 20.

Finding the Number of y.

$\dashrightarrow$ y = 50-20

$\dashrightarrow$ y = 30.

Hence,

• The total number of Not good at Science students are 30.