The numbers of students in three sections of a coaching centre are in the ratio $3 : 4 : 5$ . The sections grow by 20%, 25% and 40% respectively. What is the new ratio of students in the three sections?

18 : 25 : 35

Correct answerYour answer

23 : 29 : 45

Correct answerYour answer

15 : 20 : 28

Correct answerYour answer

20 : 25 : 40

Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

Worth noting

Adding the percentages to the ratio terms ( $3 + 20$ , $4 + 25$ , $5 + 40$ ) gives $23 : 29 : 45$ , which has no meaning.

Ten questions from Ratio & Proportion, at your own pace.

The numbers of students in three sections of a coaching centre are in the ratio 3:4:53 : 4 : 53:4:5. The sections grow by 20%, 25% and 40% respectively. What is the new ratio of students in the three sections?