The side of a square is equal to the length of a rectangle; also the side of the square is twice the breadth of the rectangle. If the sum of the areas of the square and rectangle is 48 cm2, what is the length of the rectangle
Let the length of the rectangle = l cm
and breadth of the rectangle = b cm
Given, l = a
b = a/2
According to question,
a2+l×b=48
a2+a×a/2=48
3a2 = 48×2
a2 = 32
a2 = 36
∴ a = 6 cm
Directions (next five questions) : What approximate value will come in place of question mark (?) in the given questions ? (You are not expected to calculate the exact value)
(3 × 9.2) ÷ 2/9 of 62 = ?
(24.99% of 900.911) ÷ (10.30% of 25.011) = ?4
√149-(113.79+65.89) ÷ ? = 6
A jar contains a mixture of milk and water in the respective ratio of 3:1. When 4 litre of the mixture is taken out and thereafter 3 litre of milk is added to the remaining mixture. The respective ratio of milk and water in the resultant mixture thus formed is 4:1. What was the initial quantity of water in the mixture
The interest earned on INR 4000/- when invested in Scheme A for two years at 7% p.a. simple interest is half of the interest earned when INR ‘X’ is invested for five years in the same scheme at the same rate of interest. What is the value of ‘X’
