Question
Two numbers are in the ratio 5 ∶ 9. If each number is
decreased by 8, the ratio becomes 1 ∶ 3. The numbers are:Solution
ATQ, Given ratio: (x : y) = (5 : 9) (x/y) = 5/9 9x−5y = 0 (eqn1) New ratio after decreasing each number by 8: Equating the two equations: From eqn1, x = (5y/9)
Substitute x in eqn2:
Substitute y = 24 in eqn1: The numbers are 40 and 24.
- Find the wrong number in the given number series.
8, 14, 24, 49, 59, 84 Find the wrong number in the given number series.
8, 12, 23, 40, 66, 103
174 180 198 252 414 910
640 1920 240 720 92 270
Find the wrong number in the given number series.
132, 147, 138, 155, 144, 161
1 3 7 15 33
...Find the wrong number in the given number series,
9, 60, 299, 1199, 3599, 7199
- Find the wrong number in the given number series.
32.6, 36.4, 40.2, 43.6, 47.8, 51.6 11 110 978 6824 34103 102290
- Find the wrong number in the given number series.
12, 21, 5, 38, 2, 71