Problema Solution
Lanoo exercised for a toal of (4r+90) min per week. For the first three days,he exercised for r minutes per day. For the next two days, he exercised for 35 minutes per day. For how long did he exercise for the rest of the week?
Thanks in advance.
Answer provided by our tutors
total 4r+90 min in 7 days
in 1st 3 days he excercise for r min
so total excercise in 1st 3 days = 3r
for next two days he excercise 35mins per day so taotal for these 2 days = 35+35 = 70 mins
so he excercise for the rest of week = 4r + 90 - 70 - 3r = r + 20 mins(answer)