Question 9-12

Sorry its late

#9

The distance to Grandma's house is 4/5 of the distance to Uncle Glen's house. If Uncle Glen's house is 3 1/2 hours away, how log will it take to get to grandma's house if you travel at the same speed?

This question is saying 4/5 x 3 1/2.

make the mixed number into a improper fraction.

3x2+1= 7

Denominator stays the same, the new fraction is 7/2 now you multiply.

7x4 and 5x2

the fraction should be 28/10

change it back to the mixed number which is now 2 8/10. Simplify into 2 4/5.

It takes 2 4/5 hours to get to grandma's house.

#10

It takes 3/5 of a tank of gas to get to work and back each day. How much gas is used over 5 work days? Show your thinking

3/5 x 5

3 x 5 is 15

denominator stays the same

15/5 simplify into 3

It takes 3L of gas to go to work for 5 days.

#11

Owen is 2 1/4 time as old as Robin. When Robin celebrates his 8th birthday, How old will Owen be?

change the mixed into the improper= 9/4

Multiply by 8... 9/4 x 8

9x8= 72 and the denominator stays the same

equals 72/4 simplify into 18

Owen will be 18 years old.

#12

The Karate club is arranging a grading for its members. It takes 3 1/4 hours to test a group of 4 candidates. How long will the club need the gym in order to process 3 groups of 4 candidates.

3 1/4 x 3

change into a improper = 13/4

multiply by 3.... 13/4 x 3

13 x 3 is 39

denominator stays the same

the fraction is now 39/4 simplify

the answer is 9 3/4

The Club will need 9 3/4 hours in the gym.

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