Question

Can someone help me on this question i'm not good in math.

Kenneth drove 197.65 miles in hours. What was his average speed?
(a) 53 mph
(b) 66 mph
(c) 61 mph
(d) 59 mph

Answer 1

`s=197.65\ mi\\\\t=3(7)/(20)\ h=(67)/(20)\ h\\\\v=(s)/(t)\\\\therefore:\\\\v=(197.65)/((67)/(20))\ mph=197.65\cdot(20)/(67)\ mph=2.95\cdot20\ mph=\boxed{59\ mph}\\\\Answer:\boxed{(d)}`

Answer 2

`V=(s)/(t),where\ V-speed,\ s-distance\ ,t-time\\\\ V=(197.65miles)/(3(7)/(20)h)=(197.65)/((67)/(20))=197.65*(20)/(67)=(3953)/(67)=59(miles)/(h)\\\\Answer\ is\ d.`