Question

Sarah roller skates for 3 hours with a constant speed of 18mph and then for another 1 hour with a constant speed of 12mph. What distance did she go?

Answer 1

3 * 18 = 54 miles.

1 * 12 = 12 miles.

54 + 12 = 66 miles.

66 miles.

Answer 2

d=s *t
d= 3*18=54
d= s * t
d= 1*12=12
54+12=66 
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