CAT (QA) PYQs

In a village, the production of food grains increased by $40 \%$ and the per capita production of food grains increased by $27\%$ during a certain period. The percentage by which the population of the village increased during the same period is nearest to

In May, John bought the same amount of rice and the same amount of wheat as he had bought in April, but spent Rs. $150$ more due to price increase of rice and wheat by $20 \%$ and $12 \%$, respectively. If John had spent Rs. $450$ on rice in April, then how much did he spend on wheat in May?

The total of male and female populations in a city increased by $25 \%$ from $1970$ to $1980$.During the same period, the male population increased by $40\%$ while the female population increased by $20\%$. From $1980$ to $1990$, the female population increased by $25 \%$. In $1990$, if the female population is twice the male population, then the percentage increase in the total of male and female populations in the city from $1970$ to $1990$ is