Chris buys p pairs of parts and 4 more shirts than pairs of pants.Shirts cost $18 each and pair of pants cost $25 each.What does
1 answer:
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Answer:
33.33 mL of 50%
66.67 of 80%
Step-by-step explanation:
Let x = quantity of 50% methane.
Then,
0.50x + 0.80(100 - x) = 100 × 0.70
⇒ 0.50 x + 80 - 0.80 x = 70
⇒ -0.30 x = 70 - 80
⇒ -0.30 x = -10
⇒
⇒ x = 33.33 mL of 50%
and, 100 - 33.33 = 66.67 of 80%