A can do a work in 15 days and B can do it 30 days.In how many days will A and B together complete the work ?

Answers (1)

Work done by 'A' in 15 days = 1 work
Work done by 'A' in 1 day = 1/15 part of a work
Work done by 'B' in 30 days = 1 work
Work done by 'B' in 1 day = 1/30 part of a work
Wwork done by (A+B) in 1 day = 1/15+1/30 = 3/30 = 1/10 part of a work.
Hence the (A+B) will complete the work in 10 days.

Preparation Products

NEET Foundation 2022

NEET Foundation 2022.

₹ 14999/-
Buy Now
Biology Foundation for Class 10

Biology Foundation for Class 10.

₹ 999/- ₹ 499/-
Buy Now
Knockout JEE Main April 2021 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 14000/- ₹ 4999/-
Buy Now
Knockout NEET May 2021 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 14000/- ₹ 4999/-
Buy Now
Knockout JEE Main May 2021

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 22999/- ₹ 9999/-
Buy Now
Boost your Preparation for JEE Main with our Foundation Course
 
Exams
Articles
Questions