how do you solve this ?
Attachments:
Answers
Answered by
1
ACCORDING TO QUESTION
1/20 = 1/80 +1/x
1/20 = x+80/80x
80x = 20x + 1600
60x = 1600
x = 26.6 hours apprrox
hope you mark it brainlist
Answered by
1
25 hours... nearest
Step-by-step explanation:
Zaheer = t₁ = 80 hours
Zaheer and son , t₂ = 20 hours
son, t=?
1/t = 1/t₂ = 1/t₁ = 1/20 – 1/80 = 4-1/80 = 3/80
t = 26 2/3 hrs.
Similar questions