Answer:
2.72 hours
Step-by-step explanation:
Data provided:
Time taken by Huck Finn to paint the fence = 5 hours
Time taken by Tom to paint the fence = 6 hours
Now,
Fence painted in 1 hour by Huck Finn = of total fence
and,
Fence painted in 1 hour by Tom = of total fence
Therefore,
Total fence painted together by Huck and Tom in 1 hour = +
or
Total fence painted together by Huck and Tom in 1 hour =
or
Total fence painted together by Huck and Tom in 1 hour =
Hence,
Time taken by Huck and Tom to together paint the fence =
= 2.72 hours
-2.7 because -3.9 plus 1.2 is -2.7
Answer:
(E) 450
Step-by-step explanation:
Let x represent the number of gallons of solution X that must be added to the mix. Then the amount of sugar in the mix is ...
0.20x +0.40·150 = 0.25(150 +x)
0.20x +60 = 37.5 +0.25x . . . eliminate parentheses
22.5 + 0.20x = 0.25x . . . . . . subtract 37.5
22.5 = 0.05x . . . . . . . . . . . . . subtract 0.20x
450 = x . . . . . . . . . . . . . . . . . . multiply by 20
450 gallons of solution X must be added to make a 25% sugar solution.
35 students. 150 divided by 30 is 5 that means you'll multiply 7 by 5 and getting 35.
Answer:
3 and 4 are the only ones that are right angles.
Step-by-step explanation:
A^2+B^2=C^2