Question

Minti can do a piece of work in 12 days. Minti and Rinki together can finish the work in 8 days. Find: (a) the number of days in which alon can finish the work. (b) the work left if Rinki alon works on it for 4 days.​

Answer 1

Answer:

Step-by-step explanation:

Minti alone 12 days

Minti+ Rinki 8 days

total work= Lcm(12,8) = 24

(a) Efficiency of Minti = 2

    Efficiency of Minti+ Rinki = 3

So Rinki alone can finish the work in 24/1 = 24 days

(b)

if rinki worked for 4 days alone the work completed will be 4*1 = 4

so the remaining work = 24-4 = 20 work remaining  or 20/24 = 5/6 part of the work is remaining

Answer 2

Answer:

Minki one day work 1/12

Minki+rinki one day work 1/8