Question

15%of 40 students are not good in matematics how many are good in mathematics
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Answer 1

Answer:

total students = 40 students students not good in maths = 15%

so, students not good in maths = 15/100 ×40

we will cancel 15 and 100 by 5

= 3/20 * 40

we will cancel 40 with 20 and get 2

= 3×2

= 6

so, students not good in maths = 6 students

Answer 2

Step-by-step explanation:

15% of 40 are not good

now,

15% × 40

15/100 × 40

0.15×40

6

Hence,6 are not good.

now,

40-6

34

Hence,34 of them are good in mathmetics .