Question

The ratio of the volume ice water in bottle P to the volume of water in bottle Q is 3:4.Rajeev drank 40ml of the water from bottle P and then the ratio becomes 13:20. How much water was there in bottle P at first?

Please answer if you know.​

Answer 1

Step-by-step explanation:

initial ratio - 3:4 --> 3x( vol of P),4x( vol of Q )

final ratio - 13 : 20 ---> 13x,20x

now he drank 40ml of water from bottle P ,

so, 3x-40/4x = 13/20. ( cross multiply)

3x - 40ml/4x = 13x/20x

3x - 40ml = 13x/5

15x - 200ml = 13x

15x - 13x = 200ml

2 x = 200ml

x = 100ml

so there would be ,

P - 3x => 3(100) => 300ml