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Over [174]
3 years ago
9

A car travelling at 90km/h is 500m behind another car travelling at 70km/h in the same direction. How long will it take the firs

t car to catch the second?
Mathematics
1 answer:
MAXImum [283]3 years ago
6 0

Relative speed: 90 - 70 = 20 km/h

s = d ÷  t

t = d ÷  s

t = 500 m ÷ 20 km/h x 1000 m/h x 1 ÷ 60 hr/mins

t = 1.5 minutes.

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Answer:

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Step-by-step explanation:

The reason why it represents the cost of the DVD player is because in the question, it doesn't mention anything about buying multiple DVD players. Ebony would need to buy many DVD's, but doesn't need many DVD players because ebony could use one for all of the DVD's. If you noticed in the question, it says "a DVD player," what  this means is that Ebony is only going to buy one DVD player, since it's singular (without and s at the end).

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4 years ago
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3 years ago
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julia-pushkina [17]

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Step-by-step explanation:

thats what google says, hope it helps

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