Posted by admin | Posted in Wedding accessories | Posted on 22-02-2004
Tags: amazon,, black blue 12, blackdiamond, bucle, tobuy
Can you help me solve out this problem?
A company contracts to paint 3 houses. Mr.Brown can paint a house in 6 days while Mr.Black would take 8 days and Mr.Blue 12 days. After 8 days Mr.Brown goes on vacation and Mr. Black begins to work for a period of 6 days. How many days will it take Mr.Blue to complete the contract?
a) 7
b) 8
c) 11
d) 12
A company contracts to paint 3 houses.
Mr.Brown paints in 6 days = 1 house
Mr.Brown paints in 1days =1/6 house
Mr.Brown paints in 8days =8/6 =4/3 house
work left = 3-4/3 = 5/3 house
Mr.Black paints in 8 days = 1 house
Mr..Black paints in 1days =1/8 house
Mr..Black paints in 6days =6/8= 3/4 house
work left = 5/3 – 3/4 = 11/12=
.Blue paints in 12 days = 1 house
.Blue paints in 1 day = 1/12 house
Mr. blue will finish 11/12 huse in = (11/12)/12=11 days
Hence c)
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