SOLUTION: 7. A school has enough bread to feed 30 children for 4 days. If 10 more children are added, how many days will the bread last? A) 1 1/3 B) 2 2/3 C) 3 D) 5 1/3 E) 12 5.

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: 7. A school has enough bread to feed 30 children for 4 days. If 10 more children are added, how many days will the bread last? A) 1 1/3 B) 2 2/3 C) 3 D) 5 1/3 E) 12 5.       Log On


   

Question 769803: 7. A school has enough bread to feed 30 children for 4 days. If 10 more children are added, how many days will the bread last?
A) 1 1/3
B) 2 2/3
C) 3
D) 5 1/3
E) 12

5. a revipe requires 13 ounces of sugar and 18 ounces of flour. If only 10 ouces of sugar are used, how much flour, to the nearest ounce, should be used?
A) 24
B) 23
C) 15
D) 14
E) 13
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

1.
x%2830%2B10%29+=+30%2A4
x+=+120%2F40+=+3+ days
answer: C) 3
2.
if a revipe requires 13 ounces of sugar and 18 ounces of flour and if only 10 ouces of sugar are used, amounts are proportional; so,
13%3A18=10%3Ax
13x=10%2A18
13x=180
x=180%2F13
x=13.85 ......to the nearest ounce, should be x=14
answer: D) 14