Question

A test of 60 minutes contains questions on Mathematics
and English only. The time taken to solve a Mathematics
question is twice the time taken to answer an English
question and the ratio of time taken to solve all
Mathematics questions to time taken to answer all English
questions is 8/7.
21. What is the ratio of the number of English questions
to that of Mathematics?
(A) 11/7
(B) 714 (C) 9/4 (D) 715
22. If the total number of questions is 22, how many
English questions can be answered in 18 minutes?
(A) 8
(C) 11
(D) 9
(B) 10

Answer 1

Answer:

Step-by-step explanation:

Let x=time taken to solve 1math question

y=time taken to solve 1english question

So,ATQ x=2y

Let A=total number of maths questions.

B=total number of english questions.

So, Ax/By=8/7

7Ax=8By

14Ay=8By, (x=2y)

So,A=4B/7

So, ratio of total number of english questions to total number of maths question,

B/A= B/(4B/7)=7/4

i•e, B:A=7:4