## 10. A student studied 18 hours in 7 days, if he wants to study average 2 hours each day 14 days. How many hours he needs to study for next 7

Question

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## Answers ( )

Answer:HE WILL HAVE TO STUDY 10 HOURS

Step-by-step explanation:[(2 hours)/(1 day)](14 days)=(18+x)hours

Let’s note that the unit of day is in the numerator and denominator. It cancels

[(2 hours)/(1 day)](14 days)=(18 hours)+(x hours)

(2 hours)(14)=(18+x)hours

Let’s note that the unit of hours is in the numerators of both sides of the equation. It cancels

(2 hours)(14)=(18+x)hours

(2)(14)=18+x

28=18+x

10=x