Question
170 ml of mixture contains milk and water in the ratio
of 12:x respectively. If 30 ml of water and 40 ml of milk is added into it then ratio of milk to water in the resulting mixture will be 2:1. Find the value of ‘x’. STSolution
Quantity of milk in 170 ml of mixture = 170 × 12/(12 + x) Quantity of water in 170 ml of mixture = 170 × x/(x + 12) According to question; {2040/(12 + x) + 40}/{170x/(x + 12) + 30} = 2/1 Or, 2040/(12 + x) + 40 = 340x/(x + 12) + 60 Or, (2040 – 340x)/(x + 12) = 20 Or, 2040 – 340x = 20x + 240 Or, 360x = 1800 Or, x = 5
(22 × 52 ) + 4 × 6 = ? - √324
What should come in place of (?) question mark in the given expression.
(25% of 320) + (3/8 of 400) − 30 = ?
(5832)1/3 × 10.11 × 11.97 ÷ 16.32 = ? + 45.022
82% of 400 + √(?) = 130% of 600 - 85% of 400
If (x + 1/x) = 5, then value of x3 + 1/x3 is:
Simplify: (1 ÷ 0.08)
What should come in place of (?) question mark in the given expression.
{ (144 ÷ 12) × 5 } − (18 ÷ 3) = ?
Simplify the following expressions and choose the correct option.
(3/4 of 256) + (2/5 of 150) - (72 ÷ 7)
464 + 181 +? = (154 × 25) - (15) 2
15% of 1800 + 22 = ?
