sovitouhor
Answered

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Steve ran a distance of 2400 m at a speed of 160 m/min
(a) How long did he take to run 2400 m?
(b) He wants to take 3 min less to run the same distance. At what speed must he run?

Sagot :

semsee45

Answer:

a) 15 minutes

b) 200 m/min

Step-by-step explanation:

a) Steve runs 160m per minute

Therefore, divide the total distance by 160 to find the time he took to run:

2400 ÷ 160 = 15 minutes

b) If he wants to take 3 minutes less to run it, then the new run time:

15 - 3 = 12 minutes

To calculate the new speed, divide distance by time:

2400 ÷ 12 = 200 m/min

sreanpanhaseth

Answer:

a. Find the time he take to run 2400m

v=d/t

t=d/v

where d=2400m and v=160m/min

t=2400/160

t=15min

He take 15min to run 2400m.

b. Find the speed he must run

v=d/t

where d=2400 and t=15-3=12min

v=2400/12

v=200m/min

He must run at 200m/min.

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