Asked by Lena

SASHA AND FRANCISCO WERE SELLING LEMONADE FOR $.25 PER HALF CUP AND $.50 PER FULL CUP. AT THE END OF THE DAY THEY HAD COLLECTED $15 AND HAD USED 37 CUPS. HOW MANY FULL CUPS AND HOW MANY HALF CUPS DID THEY SELL?
Answered by Lena
15 FULL CUPS AND 22 HALF CUPS
Answered by Reiny
You should check your "caps lock" key, it appears to be stuck.

number of 1/2 cups ---- x
number of whole cups --- 37-x

25x + 50(37-x) = 1500
25x + 1850 - 50x = 1500
-25x = -350
x = 14

etc
Answered by Reiny
Lena,did you not check your answer?
It does not work, mine does.

Always check your results by testing them for the original conditions
14(.25) + 22(.50) ≠ $15.00
Answered by Le
You guys are both wrong. 14 half cups and 23 full cups.
14 x .25 = $3.50
23 x .50 = $11.50

This equals $15.00 total.
Answered by Chennie jane Tamparong
*At a depth of x feet under water, the pressure in pounds per square inch is .43x + 14.7 . What is the pressure in pounds per square inch for a depth of 10 feet? 100 feet? O feet (surface of the water)?
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