Pedro spent 2 1/5 hours on his math homework and half as long on his science homework one weekend. if his english and social studies homework took 7/8 as long, how much time did he spend on homework that weekend? ? plzz ill will be marking whos

He spent 5 hours and 13.5 on homework

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Now, we simply add all the results:

2 1/5 + 1 1/10 +77/40= 2 8/40 + 1 4/40 +77 /40 = 3 89/40  

Simplifying:

3 +40/40 + 40/40 +9/40 = 3+1+1+9/40 = 5 9/40

Since 60 minutes = 1 hour

9/40 x60 = 13.5 minutes

He spent 5 hours and 13.5 on homework

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)