Solving questions

If x+y+z = 120 and x=1/2 y and y =2/3 z, find z

If a:b = 4:1, find a-3b/2a-3b^2.

- 3/7
- 2/7
- Canâ€™t be determined
- 1/7

0 voters

The present ages of Rohit and Sunil are in the ratio 3:5. 10 years hence, the ratio of their ages will be 4:5. Find the present age of Rohit. (In years)

X varies directly as the square of Y. When Y = 8, X = 192. Find X for Y=10.

- 30
- 200
- 100
- 300

0 voters

Quantities a and b are inversely proportional to each other. When a=8, b=240. Find b when a=6.

The cost of 20 apples, 20 bananas and 20 oranges is 220 rupees a boy had 19 rupees with which he could buy an apple, 2 bananas and 3 oranges. But he wanted to buy 3 apples, 2 bananas and 1 Orange for which he needs some more money. How much more money does he need?

- 7 rupees
- 6 rupees
- Cannot be determined
- 5 rupees

0 voters

Hi