Tommy can paint a fence in 9 hours. If his friend Huck helps they can paint it in 1 hour. How fast could Huck paint the fence by himself?

Question

Soutyjennife Soutyjennife

02-09-2016
Mathematics

contestada

Tommy can paint a fence in 9 hours. If his friend Huck helps they can paint it in 1 hour. How fast could Huck paint the fence by himself?

Respuesta :

Otras preguntas

what is the sum of 7/10 and 6/100

which trinomial is equivalent to (3x-1)(x+4)

Explain what is the same about two fractions that are like fractions

having troubles with inequalities.. 3.8x + 14.5 < 32

what is the sum of 7/10 and 6/100

Explain what is the same about two fractions that are like fractions

having troubles with inequalities.. 3.8x + 14.5 < 32

Explain what is the same about two fractions that are like fractions

HomertheGenius HomertheGenius · Answer 1 · 2016-09-07T19:54:33+02:00

HomertheGenius HomertheGenius

07-09-2016

Tommy can paint 1/9 of a fence in 1 hour.
With Huck he can paint a whole fence in 1 hour.
x : part of a fence that Huck can paint alone in 1 hour.
1/9 + x = 1
x = 1 - 1/9 = 8/9
1 : 8/9 = 9/8 = 1.125 hours = 1 hour 7 minutes 30 seconds

Answer Link