Carpenter A takes 15 minutes to fit the parts of a chair which carpenter B takes 4
minutes more than A to do the same work. Working together, how long will it take
for them to fit the parts of 38 chairs?
Answers
Answered by
0
Answer:
plz mark me as brainlist
Step-by-step explanation:
time taken by b = 3 minutes more than A
=15+3=18 minutes
A's 1 minute work
B's 1 minute work
(A+B)'S 1 minutes work =1/15+1/18
LCMof the number is 180
12/180+22/180= 22/180=11/90
time taken by (A+B) to fit a chair
=1/11/90=90/11 minutes
time taken by (A+B) to fit a chair
90/11 multiply 22=180 minutes
=180/60 = 3 hours
Similar questions