Question
The breadth of a rectangle is increased by 10 cm, it
will become twice the length of the rectangle. If the new perimeter is 360 cm, then find the original area (in sq.cm) of the rectangle.Solution
Let the length of the rectangle be l cm. Breadth = 2l cm According to the question, => 2(l + 2l) = 360 => 3l = 180 => l = 60 So, breadth = 60 - 10 = 50 cm Original area = 60 × 50 = 3000 cm2
A number is divided by 50. The quotient obtained is 60% more than the divisor, and the remainder is 80% of the divisor. Find the original number.
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