When water is changed into ice, its volume increases by 9%. If ice change into water, the percentage decrease in volume …

The ratio of the number of boys and girls in school at 8 : 12. If 50% of boys and 25% of girls are getting scholarship f…

If the price of a commodity is decreased by 20% and its consumption is increased by 20%, what will be the increase or de…

A number if reduced by 25% becomes 225. By what percent should it be increased so that it becomes 375 ?

A population of variety of tiny bush in an experiment field increased by 10% in the first year, increased by 8% in the s…

The price of the sugar rise by 25%. If a family wants to keep their expenses on sugar the same as earlier, the family wi…

If three-fifth of sixty percent of a number is 36, the number is :

The population of a town is 4.2 × 10<sup>6</sup>. If the population increases by 75 per 1000 per annum…