The ratio between the present ages of P and Q is 5 : 8.
The ratio between the present ages of P and Q is 5 : 8. After four years, the ratio between their ages will be 2 : 3. What is Q’s age at present?
Answer/Solution
None of these
Steps/Work
P⁄Q = 5⁄8 or P = 5Q⁄8 .....(i)
P+4/Q+4=23
or, 3P + 12 = 2Q + 8 or, 2Q – 3P = 4... (ii)
Putting value of P from eq. (i),
2Q – 3 × 5⁄8Q = 4 ⇒ Q = 32
Answer E
P+4/Q+4=23
or, 3P + 12 = 2Q + 8 or, 2Q – 3P = 4... (ii)
Putting value of P from eq. (i),
2Q – 3 × 5⁄8Q = 4 ⇒ Q = 32
Answer E