how do you find the percentage of a number - Interview Questions

how do you find the percentage of a number

The population of a village is eight thousand. If 6 % men and 10 % women are added population becomes 8600, then no of men in the village was ?

Answer : B. 5000

A reduction of 20% price of sugar enables to purchase 5 kg of sugar more for Rs 600. Find the price of the sugar per kg before reduction ?

Answer : C. 24