Question

A car at 7:30 am is moving at a constant speed of 4
km min and an odometer reading recorded is
28568 km. What would be the odometer reading at
9:15 am?
(a) 28673 km
(b) 28988 km
(C) 29255 km (d) 28568 km​

Answer 1

${\bold{\underline{\underline{Answer:}}}}$

${\bold{\therefore Odometer\:reading=28988\:km}}$

${\bold{\underline{\underline{Step-by-step\:explanation:}}}}$

• In thd given question information given about a car at 7:30 am is moving at a constant speed of 4 km/min and an odometer reading recorded is 28568 km.

• We have to find the reading of odometer reading at 9:15 am.

$\underline \bold{Given : } \\ \implies Speed = 4 \: km/m \\ \\ \implies Time =1 \: hour \: 45 \: minutes \\ \\ \implies Odometer \: reading = 28568 \: km \\ \\ \underline \bold{To \: Find: } \\ \implies Odometer \: reading \: after \: 1 \: hour \: 45 \: min = ?$

• According to given question :

$\bold{Speed = 4 \: \times 60 = 240 \: km \: h} \\ \\ \bold{ Time = \frac{105}{60} = \frac{21}{12} \: hour} \\ \\ \bold{ For \: finding \: distance : } \\ \implies Distance = Speed \times Time \\ \\ \implies D= \cancel{240} \times \frac{21}{ \cancel{12}} \\ \\ \implies D= 20 \times 21 \\ \\ \bold{\implies D= 420 \: km} \\ \\ \bold{for \: odometer \: reading : } \\ \implies Reading + D\\ \\ \implies 28568 + 420 \\ \\ \bold{\implies 25988 \: km} \\ \\ \bold{\therefore Odometer \: reading = 25988 \: km}$

Answer 2

$\huge\sf\underline{Answer:-}$

A car at 7:30 am is moving at a constant speed of 4 km min and an odometer reading recorded is 28568 km.We have to find what would be the odometer reading at 9:15 am.

Hence,

• 4 km/m = Speed
• 1 hr 45m = Time
• 28568 km = odometer

Given:-

Let S be the speed , T be the time and D be the distance.

To Find:-

What would be the odometer reading at 9:15 am.

Hence:-

$\sf S = 4 \times 60 = 240 \: km \\ \sf T = \frac{105}{60} = \frac{21}{12} \: hr$

Formula:-

$\sf D= 240 \times \frac{21}{12} \\ \sf D = 20 \times 21 \\ \sf D = 420$

Therefore:-

$\sf 28568 + 420 \\ <strong> \sf = 25988 \: km$

– Nayan Shreyas