Randy had a lot of homework tonight. he needs to work for 45 minutes on social studies 40 minutes on science and 1 hour and 15 minutes on math. it will also take him 10 minutes to get ready for bed. if he wants to be in bed at 10: 00on what time does he need to start his homework?

He needs to start his homework at 7:10.

Step-by-step explanation:

Hi, to answer this question we have to add all the times:

45 min (social studies)

40 minutes (science)  

75 minutes (math) (1 hour and 15 minutes = 75 minutes)

10 minutes (to get ready)

Mathematically speaking:

45+40+75+10 = 170 minutes

If 60 minutes equals to 1 hour:

170/60 = 2.83 =  

The hour is the integer part (2 hours)

The minutes is the decimal part multiplied by 60

0.83 x 60 = 50 minutes

So, 2 hours and 50 minutes, before 10:00.

10:00 -2:50 = 7:10

step-by-step explanation:

and 90% of people marry there 7th grade love. since u have read this, u will be told good news 2night. if u don't pass this on nine comments ur worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of ur life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love u

read more on -