Tina bought 5 bottles of nail polish and 4 tubes of lip gloss.
Answer:
24
Step-by-step explanation:
percent of 280 is 67.2
280×y/100=67.2
280y/100=67.2
2.8y=67.2
divide by 2.8
y=24
verify
280×24/100=67.2
6720/100=67.2
67.2=67.2
Let be be Beth, bi be Bill, and e be edie. Then:
1/be + 1/bi +1/e=1/12
1/bi + 1/e=1/15
10/be +10/bi +10/e+5/be+5/bi=1
Solve for be, bi, and e
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It’s green:b purple:d blue:c red:a because
