Algebra Word Problem

Algebra
Tutor: None Selected Time limit: 1 Day

It takes Harry 20 minutes longer to tie his shoes than Lloyd. Working together, they can tie Harry's shoes in 45 minutes. How long does it take Harry to tie his shoes working alone? 

May 14th, 2015

let 

suppose harry takes x times and lioyad takes y times.

then y=x-20 and x+y=45

from equation 1

y=x-20 put in equation 2

x+x-20=45

2x=45+20=65

x=65/2

x=32.5 minutes hence harry takes 32.5 min

May 14th, 2015

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