Question
The cost of fencing a rectangular field at the rate of
Rs. 5/metre is Rs. 450. If the length of the field is 11 metres more than its breadth, then find the length of the rectangular field.Solution
Let the length of the rectangular field be βlβ m Breadth of the rectangular field = (l β 11) m Therefore, perimeter of the rectangular field = 2 Γ(l + l β 11) = (4l β 22) m According to the question, 4l β 22 = 450/5 Or, 4l = 90 + 22 Or, l = 112/4 = 28 metres
54% of 250 = 6 Γ 21 + β?
What will come in the place of question mark (?) in the given expression?
(18 Γ 8 + 24) Γ 4 = ?
(30 × 0.80)β΄ ÷ (2160 ÷ 60)β΄ × (54 × 16)β΄ = (6 × 4)?+5
(500 Γ 6 Γ· 10) - (β256 + 8) = ?
(2197)1/3 + (18)2 β 121 = ? β 69 Γ 5
?% of (168 Γ· 8 Γ 20) = 126
What value should come in the place of (?) in the following questions?
3(1/2) + 5(1/2) = ? + 4(3/8)