hevnerenkaldret2068 hevnerenkaldret2068

20-11-2017
Mathematics

contestada

A new crew of painters takes two times as long as the old painters. Together they can paint in 6 hours. How many hours does it take the old painters to paint.

Respuesta :

jorel1380 jorel1380

20-11-2017

Let n be old painters time. Then the new painters are 2n. So:
1/n+1/2n=1/6
2+1=2n/6
2n=18
n=9
The old painters take 9 hours; the new ones take 18
☺☺☺☺

Answer Link

Otras preguntas

The Reflection task is where you link to outside websites to find additional information on the section topic. true or false

Estimate 8,633 x 57,008

Read the passage from the old Chinese fairy-tale "The Favorite of Fortune and the Child of Ill Luck.” But the beggar found his fortune, and at length became emp

What is the solution to the linear equation? –12 + 3b – 1 = –5 – b b = –2 b = –1.5 b = 1.5 b = 2

Many years passed, and there were no deaths in the world. The people who make their living from death began to protest loudly. The doctors claimed no one bother

farmula to calculate perimeter of rectangle

2.) Passive: The house is cleaned by my younger sister. Active: ___________________________.

Hi. Please i need help with these questions :Simplify1. [tex] \frac{ {d}^{2} - 9 }{ {d}^{2} - 7d + 12 } [/tex]2.[tex] \frac{ {m}^{2} + 2mn + {n}^{2} }{ {m}^{2

Spain wanted to befriend the Comanche people so they decided to ______________. a. put extra effort into Christianizing the Comanches b. adopt the trade practic

PLEASE HELPPPPPPP multiply