Question
The ratio of the length to the breadth of a rectangle is
5:7. If the sum of the length and breadth of the rectangle is 60 cm, find the area (in cm²) of the rectangle.Solution
Let the length and breadth of the rectangle be 6x cm and 9x cm, respectively. According to the question, 5x + 7x = 60 Or x = 60/12 = 5 Therefore, area of the rectangle = 5 x× 7x = 35x2 =35×25 = 875 cm2
What value should come in the place of (?) in the following questions?
40% of 480 + √? = 25% of 300 + 126
(-251 × 21 × -12) ÷ ? = 158.13
What will come in the place of question mark (?) in the given expression?
√(? - 212) - 84 = 81 - 13 X 9
12 × 19 + 13 × 15 + 152 = ?% of 500
3/7 Of 504 ÷ 12 + 17 = √?
30% of 750 + ?% of 400 = 25% of 1016 + 3
What value should come in place of the question mark (?) in the following question?
60% of 120 – ?% of 64 = 20% of 200
- Find the value of the expression:
32 + 6 – 5 × [18 + 10 – 3 × (36 – 21)] 82% of 400 + √(?) = 130% of 600 - 85% of 400
What value should come in the place of (?) in the following questions?
√16 * ? = √144 + (18 * 4 ÷ 3)
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