Question
The ratio of the present ages of βAβ and βBβ is
5:8, respectively. Two years hence from now, the age of βBβ will be 26 years. If the average of present ages of βAβ, βBβ and βCβ is 25 years, then find the present age of βCβ.Solution
Let the present ages of βAβ and βBβ be 5x years and 8x years, respectively Therefore, 8x + 2 = 26 Or, 8x = 24 Or, x = 3 Sum of present ages of βAβ and βBβ = 5x + 8x = 39 years Sum of present ages of βAβ, 'Bβ and βCβ = 25 Γ 3 = 75 years Therefore, present age of βCβ = 75 β 39 = 36 years
A-5,Β Β A,Β Β 35,Β Β 52,Β 78,Β 115
30, 42, 48, 54, 65, 81, 126
- Find the wrong number in the given number series.
25, 34, 18, 34, 9, 46 Find the wrong number in the given number series.
32, 48, 72, 108, 162, 245
Find the wrong number in the given number series.
1600, 800, 1200, 400, 100 , 12.5
547, 594, 640, 691, 741, 792
Find the wrong number in the given number series.
26, 38, 60, 110, 206, 398
75, 450, 225, 1330, 675, 4050
Find the wrong number in the given number series.
8, 12, 23, 40, 66, 103
62, 79, 98, 119, 142, 165