Deepti went to school for 216 days in a full year. If her attendance is 90%, find the number of days on which the school was opened.

A coolie deposits Rs 150 per month in his post office Savings Bank account. If this is 15% of his monthly income, find his monthly income.

Asha got 86.875% marks in the annual examination. If she got 695 marks, find the total number of marks of the examination.

A garden has 2000 trees. 12% of these are mango trees 18% lemon and the rest are orange trees. Find the number of orange trees.

Balanced diet should contain 12% of proteins, 25% of fats and 63% of carbohydrates. If a child needs 2600 calories in this food daily, find in calories the amount of each of these in his daily food intake.