taylzaidi88
Answered

Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Join our platform to connect with experts ready to provide detailed answers to your questions in various areas. Get quick and reliable solutions to your questions from a community of experienced experts on our platform.

solve this with explanation

Solve This With Explanation class=

Sagot :

(I) 140 sec (2) 300 sec or 5 min

Step-by-step explanation:

(1)80+60=140

(2)1 lap is 60 sec or 1min

we multiply with 60 sec × 5 = 300 sec or

1 min ×5 = 5 min

Answer:

(i) 240 s

(ii) 20 min

Step-by-step explanation:

(i) Just look at the times for X and Y after each round, when is the first time, that the times match? In seconds

X:  60, 120, 180, 240 ...

Y:  80, 160, 240, ....

So they meet at the starting point after 240 seconds.

X has done 3 laps and Y 4 laps at this time.

(ii)

To answer this question: Let x be the number of laps that Y has done.

If X has done 5 laps more the following must be true:

60 * (x + 5) = 80x

60x + 300 = 80x

300 = 20x

x = 15

Therefore Y has done 15 laps at the time, which results in:

80 * 15 = 1200 seconds - or 20 min.

At the same time

60 * 20 = 1200 seconds gives the same outcome

We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. Thanks for using our service. We're always here to provide accurate and up-to-date answers to all your queries. Thank you for choosing Westonci.ca as your information source. We look forward to your next visit.