A contractor first completes $7/16$ of a building. Then he completes $1/4$ of it. And finally completes $2/5$th of the remainder of the building. If there is $36$ days left to finish the construction of the building, how many days in total would it take to finish it completely? (The answer is supposed to be $192$ days)
Asked
Active
Viewed 120 times
0
-
What have you tried. - Or noticing that you askedhttp://math.stackexchange.com/questions/1088590/how-to-calculate-a-distance-with-different-fraction-ratios earlier today: what have your son tried. The method to use is exactly the same. – Henrik supports the community Jan 02 '15 at 16:19
-
When I add the three fractions, it does not get me to where i need to. If I assume all the numerators to be 16, it makes sense but is still doesn't get me the answer that my son's teacher has put. – Ann Jan 02 '15 at 16:22
1 Answers
0
HINT Find the amount of work remaining
$\frac{7}{16}+\frac{4}{16}+(1-\frac{11}{16})*\frac{2}{5}$
123
- 1,708