All categories

2 years ago

Joe's math homework took 20 minutes to complete. If Joe finished his homework at 8:40 P.M., what time did he start his homework?

Mathematics

2 answers:

crimeas [40]2 years ago

8 0

He started at 8:20 PM

kotegsom [21]2 years ago

5 0

He started at 8:20pm

You might be interested in

At 5.45p.M .,lixin,khairul and Devil are at the starting point of a 1-km circular path. Lixin Takes 18 minutes to walk one round

sweet [91]

Answer:

$Meeting\ Time = 6:03\ pm$

Step-by-step explanation:

Given

$Start\ Time= 5:45pm$

$Lixin = 18\ min/round$

$Khairul = 360\ seconds/round$

$Devi = 4minutes/2\ rounds$

Required

Determine their next meeting time

First, we need to get their unit rate in minutes per round

$Lixin = 18\ min/round$

$Khairul = 360\ seconds/round$

Convert 360 seconds to minutes

$Khairul = \frac{360}{60} min/round$

$Khairul = 6 min/round$

$Devi = 4minutes/2\ rounds$

Divide by 2/2

$Devi = 2mins/round$

So, we have:

$Lixin = 18\ min/round$

$Khairul = 6 min/round$

$Devi = 2mins/round$

Next, is to determine the LCM of 18, 6 and 2

$18=2 * 3 * 3$

$6 = 2 * 3$

$3 = 3$

Their LCM is:

$LCM = 2 * 3 * 3$

$LCM = 18$

This means that they will meet 18 minutes after their initial time of departure.

So:

$Meeting\ Time = 5:45\ pm + 18\ minutes$

$Meeting\ Time = 6:03\ pm$

3 0

2 years ago

What is 278 minus 149

Basile [38]

Answer:

129

Step-by-step explanation:

278 - 149 = 129

5 0

2 years ago

Read 2 more answers

A school was taking a field trip. The principal wanted 2 teachers for every 45 students. If 270 students will be attending the t

DaniilM [7]

Answer:

The answer is 6.

Step-by-step explanation:

If there are 270 students going on the trip and there would be a teacher for every 45 students you would have to divide.

You would divide 270 ÷ 45 = 6.

6 0

1 year ago

10 of 14

gtnhenbr [62]

Answer:

why in kilometers? 87.3 km/h

7 0

2 years ago

The full screen guys

Semmy [17]

Answer:

(-2 2/3,0)

(0,2)

Step-by-step explanation:

Just did it

6 0

2 years ago

Read 2 more answers