Jija8888idn
Answered

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At 65km/hr, Alfred can Reach home in 50minutes. At what speed should he drive his car so that he can reach home 10minutes earlier? ​

Sagot :

Alphaiotaidn

Answer:

81.25 km/hr

Step-by-step explanation:

To solve this problem, we can use the distance formula, D = rt, where r = rate and t = time.

D = (65km/hr)(50 min) and D = r(40 min)

where 'r' represents the rate we have to find and '40' is the time it should take (since 10 minutes earlier than 50 is 40 minutes)

The problem is asking for the speed (rate) that he should drive his car to reach home 10 minutes earlier. Since, we are talking about the same distance, we can equate the two equation.

(65km/hr)(50 min) = r(40 min)

65(50) = 40r

3250 = 40r

81.25 = r

Therefore he should drive at the speed of 81.25 km/hr so that he can reach his home 10 minutes earlier.