Ratio and Proportion Practice Test 4

The ratio of Mahesh’s salary for the two years = 2 : 3
The ratio of Suresh’s salary for the two years = 4 : 5
We have also given that the ratio of their salary during the last year = 3 : 5
Now, we change the antecedents (2 and 4) of the first two ratios so that the antecedents in the first becomes 3 (antecedent of the third ratio) and the antecedent in the second becomes 5 (consequent of the third ratio).
Thus, $2:3=3:\frac{9}{2}$ and $4:5=4\left(\frac{5}{4}\right):5\left(\frac{5}{4}\right)=5:\frac{25}{4}$
Now, it is clear that the ratio of their salaries for the present year is $\frac{9}{2}:\frac{25}{4}=18:25$
∴ The present salary of Mahesh = $\frac{4300}{18+25}\times 18$ = Rs. 1800