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Step-by-step explanation:
It would then cost $90 because 25% of $120 is $30
Answer:
correct answer is 3
Step-by-step explanation:
Answer:
30 pounds
Step-by-step explanation:
Amount of tin in first alloy + amount of tin in second alloy = amount of tin in mixture
0.15 (20) + 0.10 x = 0.12 (20 + x)
3 + 0.10 x = 2.4 + 0.12 x
0.6 = 0.02 x
x = 30
80 because the both lines intersect at this point.
