Elijahrheiortizidn
Answered

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It takes Robin 20 minutes to ride his bicycle at 20 kph from home to Grocery Store. To shorten his travel time to 16 minutes for the same distance, how fast should he cycle?

Sagot :

Smartonizidn
Answer:

Robin should cycle at 25 kph

Step-by-step explanation:

Let the desired speed be “x” kph because it's unknown

Speed (kph) = 20 kph → 20 minutes
Time (minutes) = x kph = 16 minutes

The faster the bicycle is driven, the less time is required to reach the destination.

Speed needed to shorten travel time to 16 minutes:
“x”kph

Time taken when the speed is 20 kph:
20 minutes

Speed needed to reach a travel time of 20 minutes:
20 kph

Time taken when the speed is x kph:
16 minutes

16.x=20.20
(Get the cross products)

16x/16=400/16
(Divide both sides by 16)

400 ÷ 16 = 25

x=25

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