Question

A girl go out of her house at 10:00 a.m. on Saturday. Her mother, who likes to measure time in seconds told her to come back in 1.728 * 10^5 s. She came back at 9:00 a.m. on Monday.
A) she came back exactly on time
B) she came back 1 hour before her time limit
C) she came back 2 hour before her time payment
D) she came back 1 hour after her time limit

Answer 1

Answer:

B

Step-by-step explanation:

1.728×10^5 seconds=1.728*10^5/3600 hour

=48 hours

That means her mother told her to come back on Monday 10am.

So answer B is correct.

Answer 2

Answer:

Option B is the right choice.

Step-by-step explanation:

The girl got out at 10:00am on Saturday.

Her mother told her to come back in 1.728*10^5 seconds.

Convert seconds into hours.

We know that ! hour has 3600 seconds.

To convert 1.728*10^5 seconds into hours:

Divide 1.728*10^5 by 3600

(1.728*10^5)/3600=48 hours

Therefore her mother told her to come back in 48 hours that is 10:00am on Monday.

The girl came back at 9:00am on Monday.

Hence she came 1 hour before her time limit.