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5.08 Consumer applications of proportional reasoning

Interactive practice questions

Look at the tables below. Determine whether each of them is showing a proportional relationship.

a
$1$1 $2$2 $3$3 $4$4 $5$5
$2$2 $4$4 $6$6 $8$8 $10$10

Proportional

A

Not proportional

B
b
$0$0 $0$0
$1$1 $7$7
$2$2 $14$14
$3$3 $6$6
$4$4 $28$28

Proportional

A

Not proportional

B
Easy
< 1min

Look at the tables below. Determine whether each is showing a proportional relationship.

Easy
< 1min

During a gym session, participants can either do full push-ups (on toes) or half push-ups (on knees). However since half push-ups are easier, those who choose this option will need to do more of them. The table shows how many full and half push-ups participants had to do.

Easy
2min

A courier’s delivery charges are outlined in the table below.

Easy
3min
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Outcomes

7.RP.A.3

Use proportional relationships to solve multi-step ratio and percent problems. Examples: batting averages, recipes, simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error, etc.

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