22.2k views
19 votes
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?

User Dmackerman
by
8.4k points

2 Answers

6 votes

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.

User Tuxtitlan
by
8.1k points
8 votes

Answer:

a) 15 minutes

b) 200 m/min

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

User Anuj Arora
by
8.0k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories