Answer:
54
Step-by-step explanation:
a=54
a/9 = 6
(mutliply both sides by 9)
9(a/9) = 6(9)
a = 54
Note that 80% is 8 times 10%.
Thus, we could start with "If 10% of a number is 7" and multiply both quantities by 8: "80% of a number is 56."
Think:
10% of a number is 7,
20% is 14,
50% is 35,
70% is 49, and
80% is 56.
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