I can finish a work in 15 days at 8 hr day. you can finish a work in 20/3 days at 9 hr day. Find in how many days we can finish job working 10hrs a day??
option:-
a. 3.5 days b. 4 days c. 4.5 days d. 5
days

• I take 15*8=120hr and you takes (20/3)*9=60hr to complete the work respectively ,overall time taken to complete the work togather=(120*60)/180=40hr
  let x days are required to complete the work togather working 10hr a day then
  10*x=40
  x=4days
  
• 9 years agoHelpfull: Yes(1) No(0)
• I finish the work in 120hrs(15*8)
  You finish the work in 60hrs((20/3)*9)
  total work is 120 parts(lcm of 120 & 60)
  I do 1 part & You do 2 parts
  total they do 3 parts per hour
  they work 10 hrs per day,hence they do 30 parts per day
  hence to complete 120 parts they take 120/30=4days
  ANS:4days
• 9 years agoHelpfull: Yes(1) No(0)
• 1/120+1/60=1/40(work done per hour)
  work done in 10 hour=1/4
  required day=1/(1/4)=4
  so b is d answer
• 9 years agoHelpfull: Yes(0) No(0)
• I complete the work in 15*8=120
  u can complte the work in 20/3*9=60
  i & u=(120*60)/120=40
  so num of days=40/10=4
• 9 years agoHelpfull: Yes(0) No(0)
• I take 15*8=120hr and you takes (20/3)*9=60hr to complete the work togather=(120*60)/180=40hr
  working 10hr a day then
  x=40/10=4hr
• 5 years agoHelpfull: Yes(0) No(0)