Question
A container has only two types (P and Q) of oil in the
ratio 3:2 respectively. When 80 litre of oil Q is added to the container the quantity of oil P becomes 25% of that of oil Q. Find the capacity of the container if it becomes full after addition of 80 litre of oil. TYPE 7Solution
Let the quantity of oil in the container be 3x and 2x litres respectively. According to the question, => 3x = 0.25 × (2x + 80) => 2.5x = 20 => x = 8 Total capacity of the container = 3x + 2x + 80 = 120 litres.
(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 Â
15% of 1800 + 22 = ?Â