Question

72% of 25 students are good in mathematics. How many are not good in mathematics?
​

Answer 1

Given:

• Number of students who are good in mathematics = 72% of 25

To Find:

• who are not good in mathematics ?

Solution:

$\rm{= \frac{ \cancel{72}} {\cancel{100}} \times 25 = 18}$

$\space$

Number of students who are not good in mathematics $\bf{ \pink{\implies }25 – 18 = 7}$

$\space$

Hence percentage of students not good in mathematics $\rm{ = \frac{7}{25} \times 100 = \bf{28\%}}$

_____________________________________________________