P: Q = 5: 8
Q: R = 12: 7
R:S=14:15
P: S =?
P:Q:R=5 x12:8 x12:8 x7
=60:96:56
=15:24:14
P: Q:R:S = 15 :24:14:15
Hence, P:S=15:15 =1:1
Mathematical Aptitude MCQ - Ratio Proportion, Percentage and Discounting
Shopkeeper uses a weight of 800 g instead 1 kg, so that gain
= 1000 - 800 x100
      800
= 200 /800 xl00 = 25%
His profit will be 25%.
= 1000 - 800 x100
      800
= 200 /800 xl00 = 25%
His profit will be 25%.
In 30 L of mixture, milk is 21 L and water is 9 L. Let x L of water needs to be added.
⇒ 147 = 27 + 3x
⇒ 120= 3x
⇒ x = 40L
⇒ 147 = 27 + 3x
⇒ 120= 3x
⇒ x = 40L
If the ratio is 1 : 4, Then the number of defective bulbs = x and number of good bulbs = 4x
∴ x + 4x = 12
⇒ 5x = 12
which is not possible for any integral value of x.
So, 1 : 4 is not possible.
∴ x + 4x = 12
⇒ 5x = 12
which is not possible for any integral value of x.
So, 1 : 4 is not possible.
