Question

A car travels 15 1/10 miles in 1/3 of an hour. What is the average speed, in

miles per hour, of the car?

Answer 1

Explanation:

Miles = 15 1/10

Miles = 151/10 miles

Hour = 1/3 hour

Av = 151/10 miles / 1/3 hour

Av = 151/10 × 3 / 1/3 × 3

Av = 453/10 miles / hour

Av = 45,3 mil / h

Answer 2

Given:-

`\red{➤}\:`
`\sf Distance \: travelled \: by \: Car= 15(1)/(10) miles`

`\quad\sf =(10×15+1)/(10)= (151)/(10) miles`

`\red{➤}\:`
`\sf Time \: taken \: by \: Car= (1)/(3) \:hours`

`\\`

To Find:-

`\orange{☛}\:`
`\sf Average \: Speed \: of \:Car, \:in \: miles \: per \: hour`

`\\`

Solution:-

`\underline{\tt{Formula\:Applied}}`

`\green{ \underline { \boxed{ \sf{Speed=(Distance \:travelled)/(Time \:taken)}}}}`

`\\`

`\underline{\tt\pink{Putting \:Values-}}`

`\begin{gathered}\\\quad\longrightarrow\quad \sf Speed=((151)/(10))/((1)/(3)) \\\end{gathered}`

`\begin{gathered}\\\quad\longrightarrow\quad \sf Speed=(151×3)/(10×1) \\\end{gathered}`

`\begin{gathered}\\\quad\longrightarrow\quad \sf Speed=(453)/(10) \\\end{gathered}`

`\begin{gathered}\\\quad\longrightarrow\quad \sf Speed=45(3)/(10) miles \: per \: hour\\\end{gathered}`

`\boxed{\sf{Speed \:of \: the \: Car = 45(3)/(10) miles/hour}}`