Question
A mixture of 60 liters contains milk and water in the
ratio 7:5. How much milk should be added to make the ratio 3:1?Solution
Initial milk = (7/12) × 60 = 35 liters Initial water = (5/12) × 60 = 25 liters Let x liters of milk be added. New ratio = (35 + x)/25 = 3/1 35 + x = 75 x = 40 liters Answer: d) 40 liters
If a + (1/a) = 2, then find the value of (a5 + a3 + 6)/(7a – 5).Â
 Given a triangle with two sides measuring 12 cm and 16 cm, which of the following cannot be a possible length for the third side?
A man running at the speed of 6 kmph was over taken by the train moving with the speed of 78 kmph in 20 seconds. Find the length of train.
(15 x 15 x 15 + 8 x 8 x 8)/(15 x 15 -15 x 8 + 8 x 8) = ?
If (a2  + 1/a2 ) = 66, then find the value of (a3  – 1/a3 ).
- If p = 28 - q - r and pq + r(p + q) = 231, then find the value of (p² + q² + r²).
A train can cross a pole, a bridge of 720 meter long and platform of 640 meter long in 9 seconds, _____ seconds and 25 seconds, respectively.
The...
ABCD is a cyclic quadrilateral in which AB =16.5 cm. BC = x cm. CD= 11 cm. AD 19.8 cm, and BD is bisected by AC at O. What is the value of x?
