(18.8)w is the expression that represents how much Jenny exercises in w weeks.
Step-by-step explanation:
Toby exercises a week = 14 hours
John exercises 20% more than Toby = 120 % of 14
⇒ (120/100)×14
⇒ (6/5)×14
⇒ 16.8 hours.
John exercises a week = 16.8 hours
Jenny exercises two more hours than John.
Jenny exercises per week = 16.8 + 2 = 18.8 hours.
The expression that represents how much Jenny exercises in w weeks = Number of hours in one week × Number of weeks(w)
⇒ 18.8 × w
The expression t = 18.8 w represents how much Jenny exercises in w weeks
Step-by-step explanation:
Step 1 :
Number of hours Toby exercises a week = 14
Number of hours John exercises a week = 20% more than Toby = 20% of 14 + 14 = = 14 + 2.8 = 16.8
Number of hours Jenny exercises a week = two more hours than John = 2 + 16.8 = 18.8 hours
We need to determine the expression which represents how much Jenny exercises in w weeks
Step 2 :
The hours that Jenny exercises in w weeks can be determined by multiplying the total hours he exercises a one week by the total number of weeks
Hence
t = 18.8 w
where t represents the total hours Jenny exercises in one week.
Step 3 :
Answer :
The expression t = 18.8 w represents how much Jenny exercises in w weeks
