Question
The length of a rectangle is four times its breadth. If
its length is increased by 20 cm. and breadth is increased by 30 cm, the area of the rectangle is increased by 880 cm². Find the length of the rectangle.Solution
Let Breadth = x Then Length= 4x ∴ Original area = 4x × x = 4x2 Now, New Area = (4x+20) (x+30) According to Question, => (4x+20) (x+30) - 4x2 = 880 => 4x2 + 140x + 600 - 4x2 = 880 => x = 2 Length = 8cm
Select the option that is related to the third number in the same way as the first number is related to the second number and the fifth number is relate...
Select the option that is related to the third number in the same way as the second number is related to first number and the sixth number is related t...
A recent survey for XYZ city showed that 56 percent of the population is below 21 years (exactly 21 years old not included), 25 percent of the rest of p...
- Select the option that is related to fifth letter - cluster in the same way as the second - letter cluster is related to the first letter - cluster and the...
Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
F S_ Y Z _ _ N _Z F _ _ Y Z
Select the option that is related to the third number in the same way as the second number is related to the first number.
55 : 86 :: 39 : ?
Select the set in which the numbers are related in the same way as are the numbers of the following sets.
(NOTE : Operations should be performed ...
- Select the option that is related to the fifth element in the same way as the second element related to the first element and the fourth element is related...
Select the option that is related to the third word in the same way as the second word is related to the first word .
Pressure: Pascal :: Ener...
11 : 110 :: 13 : ?
Relevant for Exams:
