Question
Present average age of 4 friends: ‘A’, ‘B’,
‘C’ and ‘D’ is 25 years. If their ages are in the arithmetic progression in the same order and ‘D’ is 4 years older than ‘B’, then find the sum of present ages of ‘A’ and ‘C’.Solution
Common difference between ages = (4/2) = 2 years. So, let present ages of ‘A’, ‘B’, ‘C’ and ‘D’ be ‘x’, (x + 2) years, (x + 4) years and (x + 6) years, respectively According to question: x + x + 2 + x + 4 + x + 6 = 100 Or, 4x = 88 Or, x = 22 years (Age of A) Present age of ‘C’ = x + 4 = 22 + 4 = 26 years Required sum = 22 + 26 = 48 years
SPY: ROX :: KIN: ?
In a certain code language, ‘CROSS’ is written as ‘66’ and ‘CHART’ is written as ‘90’. How will ‘SYMBOL’ be written in that language...
If a mirror is placed on the shaded line, which of the following options is the correct image of the given shape?
What are the two signs to be interchanged for making the following equation correct?
[{( 82 + 22) - ( 6 × 2 )} ÷ ( 2 - 4 )] × 2 = 24
...What should come in place of the question mark (?) in the given series based on the English alphabetical order?
BXL, DVN, FTP, ?, JPT
Which of the following numbers will replace the question mark (?) in the given series?
8, 18, 38, 78, 158, ?
In a certain code language, 'COBBLESTONES' is written as 'BBOCTSELSENO', and 'SATISFACTORY' is written as 'ITASCAFSYROT'. How will 'TACHYCARDIAS' be wri...
Select the letter-cluster that will replace the question mark (?) in the given series and make it logically complete.
FRP, HTR, JVT, ?, NZX
A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
NIE, QLH, TOK, WRN, ...
