The expenditure for 18 students in a hostel per month is ₹ 2700. If the expenditure in a month is raised to ₹ 3300, how many more students are joined in that month ?

The income of kumar for 3 months is ₹ 15000. If he earns the same amount for a month - In how many months will he earn ₹ 95000 ?

Ration is available for 100 students in a hostel for 40 days. How long will it be last, if 20 more students join in the hostel after 4 days?

The ratio of incomes of two persons is 9 : 7 and the ratio of their expenditures is 4 : 3 If each of them manages to save Rs.200 per month, find their monthly income.

The ratio of income of two persons is 8:5 and the ratio of their expenditure is 5:3.If each of them manages to save Rs 2,000 per month find their monthly income.

The adjoining pie chart gives the expenditure on various Items during a month for a family. (The numbers written around the pie chart tell as the angles made by each sector at the centre). Answer the following : If the expenditure on food is Rs. 3000 ? What is the expenditure on education of children?

The teacher distribute 15 pencils per student, how many pencils are needed for 'y' students: