Question

Ankit and Bhanu can complete the math summer project in 10 days and 15 days, respectively. They decided to work together during the vacation, but Bhanu left for a trip after some days. Then Ankit finished the remaining work in 5days.Find the number of days they worked together.​

Answer 1

Answer:

A+B= 4days

Step-by-step explanation:

take LCM of 10,15 ; 30 so total work =30 units

here calculate

A per day work =30/10=3 units

B " ". =30/15=2 units then

A + B ". ". =3+2= 5 units

B finished remaing work in 5 days so

= 5×2 (per day) = 10 units, remaing work B did

A+B together finished work= 30( total ) -10 ( B alone work) =20 units

A+B work days = 20 units / 5 (per day together units ) = 4 days