CAT 2025 Slot 3 QA Question 40: Renu would take 15 days working 4 hours per day to complete a certain task whereas Seema would take 8 days working 5 hours per day to complete the same task. They decide to work together to complete t

Question

Renu would take 15 days working 4 hours per day to complete a certain task whereas Seema would take 8 days working 5 hours per day to complete the same task. They decide to work together to complete t

Accepted Answer

Renu completes the task in $15	imes 4 = 60$ working hours, so her hourly work rate is $\dfrac{1}{60}$.
Seema completes the task in $8	imes 5 = 40$ working hours, so her hourly work rate is $\dfrac{1}{40}$.
Renu works $2$ hours per day. Seema works double that, so Seema works $4$ hours per day.
Let