If the parents drove at 40 mph and Christopher was 10 mph faster, his …

Question

If the parents drove at 40 mph and Christopher was 10 mph faster, his speed was:

Accepted Answer

C. 50 mph

1. Add 10 to 40.
2. Christopher drove at 50 mph.
3. He covered 75 miles in 1.5 hours.
_Source: OpenStax Elementary Algebra 2e, Chapter 3, Uniform Motion Applications (CC BY 4.0)._

Answer

60 mph

Answer

30 mph

Answer

45 mph

If the parents drove at 40 mph and Christopher was 10 mph faster, his speed was:

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