The sum of the amount that Sunaina and Ranjan have is Rs. 23 and the difference of their amount is Rs. 7. The ratio of the amount that Sunaina and Ranjan have is:

If the mean proportional of A and 27 is 18, then find the value of A.

A typist takes 40 minutes to type 2 pages. How long (in minutes) will he take to type 110 pages?

Find the value of x in the proportion 69 : 23 :: 63 : x.

The ratio of the incomes of A and B is 3 : 5 and the ratio of their expenditures is 2: 3. If the income of A is equal to 6/7 of the expenditure of B, then the ratio of the savings of A and B is :

The ratio of number of boys and girls in a school of 3528 students is 5:4. How many more girls should be admitted in the school to make this ratio 1:1?

If the third proportional of 28 and 70 be x, then what is the value of x?

The cost of 40 packets of 12 pens is ₹1680. The cost of 30 packets each containing 9 pens is

The first, second and fourth numbers in a proportion are 31, 12 and 156 respectively.