Question
The average of three numbers a, b and c is 2 more than
c. The average of a and b is 48. If d is 10 less than c, then the average of c and d is:Solution
Average of a and b = (a + b)/2 ⇒ (a + b)/2 = 48 ⇒ a + b = 96 ----(i) Average of three numbers a, b, and c = (a + b + c)/3 ⇒ (a + b + c)/3 = 12 + c ⇒ a + b + c = 36 + 3c ⇒ a + b = 36 + 2c Using (i), ⇒ 96 = 36 + 2c ⇒ 2c = 60 ⇒ c = 30 Then, ⇒ d = 30 – 10 ⇒ d = 20 Average of c and d = (c + d)/2 ⇒ (30 + 20)/2 ⇒ 50/2 ⇒ 25 ∴ The average of c and d is 25
If '+' means '+', '–' means '+', '×' means '–', '÷' means '×', then what will come in place of the question mark (?) in the following equation?
Change the question mark with the option that follows the applied logic in the first pair.
Net : Fish :: Antenna : ??
Select the option that represents the correct order of the given words as they would appear in an English dictionary?
1. Voice
2. Vocalist...
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. In three of the four pairs...
Select the figure which will replace the question mark (?) in the given figure to complete the pattern.
For the Assertion (A) and Reason (R) below, choose the correct alternative:
Assertion (A): When common salt is kept open, it absorbs moisture fro...
In this question, two statements I and II have been given. These statements may be independent causes or effects of independent causes or a common caus...
Kiran, Pihu, Siya, Leena, Reena and Jiya are sitting around a circular table facing the centre. Kiran sits 3rd to the right of Pihu. Siya sits 2nd to th...
In a certain code language, ‘PAINT’ is written as ‘ODYTN’ and 'BRUSH' is written as 'CMMOZ'. How will ‘HOUSE’ be written in that language?
Select the correct mirror image of the given figure when the mirror is placed at MN as shown below.