24. Randall purchased a shirt for $19.44 using a $20 bill. If his correct change
was returned in only dimes ($0.10) and pennies ($0.01), how many coins
could Randall have received?
(A) 9
(B)
21
(C)
29
(D)
37
(E)
44
25. In the modern era, the global population of humans has increased by 1
billion people approximately every 13 years. If that rate were to continue,
approximately how many years would it take for the Earth’s population to
double from its current population of 7 billion people?
(A)
26
(B)
52
(C)
91
(D)
104
(E)
169
Gerald bought a used motorcycle for $1,200 and spent $305
repairing it. He then sold the motorcycle for 20% more than the
total amount he spent for purchase and repairs.
26.
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