Ratio, Proportion, Indices, LogarithmMCQMTP May 18Question 812 of 302

P, Q and R three cities. The ratio of average temperature between P and Q is $11:12$ and that between P and R is $9:8$. The ratio between the average temperature Q and R

Select Your Answer (Keyboard: A, B, C, D)

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Correct Answer

✅ Option d — None of these

Let

\displaystyle T_P, T_Q, T_R

represent the temperatures of cities $P, Q, R$ respectively.
We are given two ratios:

\frac{T_{P}}{T_{Q}} = \frac{11}{12} ⟹ T_{Q} = \frac{12}{11} T_{P}

\frac{T_{P}}{T_{R}} = \frac{9}{8} ⟹ T_{R} = \frac{8}{9} T_{P}

We want to find the ratio between the average temperatures of

\displaystyle Q

and

\displaystyle R

\frac{T_{Q}}{T_{R}} = \frac{\frac{12}{11} T_{P}}{\frac{8}{9} T_{P}}

=

Thus, the ratio is $27 : 22$.

Paper

Paper 3: Quantitative Aptitude

Weightage

5-7 Marks

Key Topics

Ratio, Proportion, Indices, Logarithms

This chapter covers Ratio, Proportion, Indices, Logarithms and is part of Paper 3: Quantitative Aptitude in the CA Foundation exam.

Exam Strategy Tip

This topic carries 5-7 Marks weightage. Focus on understanding core concepts rather than memorizing.

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