Let x be the amount of cement and y be the amount of sand. If <span>the ratio of cement to sand for mortar is 1:3, then

and y=3x.
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So, if <span>Sandy puts in x=7 shovels of cement, then she puts

shovels of sand.
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Answer: 21 shovels of sand.
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Answer:
hope this helps. Happy Holidays
No this is not true because 3/5 + 4 equals 4.6 and 3/5 is 0.6
Answer: 95.55%
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Work Shown:
A = event that copier A breaks down
B = event that copier B breaks down
P(A) = probability that copier A breaks down
P(A) = 2% = 0.02
P(B) = probability that copier B breaks down
P(B) = 2.5% = 0.025
P(neither break down) = (1-P(A))*(1-P(B))
P(neither break down) = (1-0.02)*(1-0.025)
P(neither break down) = 0.9555
P(neither break down) = 95.55%
Answer:
91/4 or 22 3/4
Step-by-step explanation: i just know