Ratios and Rates

Hong Kong

Stage 1 - Stage 3

Ryan and Valerie are preparing for a party. Ryan blows up $12$12 balloons in $15$15 minutes. Valerie blows up $24$24 balloons in $28$28 minutes. Who is blowing up balloons faster?

a

Complete the table for the number of balloons Ryan blows up in each time period. Assume that he keeps blowing up balloons at a constant rate.

Time (minutes) | $0$0 | $15$15 | $\editable{}$ | $45$45 | $60$60 |
---|---|---|---|---|---|

Balloons | $\editable{}$ | $12$12 | $\editable{}$ | $\editable{}$ | $\editable{}$ |

b

Complete the table for the number of balloons Valerie blows up in each time period. Assume that she keeps blowing up balloons at a constant rate.

Time (minutes) | $0$0 | $28$28 | $56$56 | $84$84 | $\editable{}$ |

Balloons | $\editable{}$ | $\editable{}$ | $\editable{}$ | $\editable{}$ | $96$96 |

c

Using the table above, who is blowing up balloons the fastest?

Valerie

A

Ryan

B

Easy

3min

David and Justin both travel to school by riding scooters. David covers $8$8 kilometres in $4$4 minutes. Justin travels $35$35 kilometres in $16$16 minutes.

Easy

1min

Consider the fractions $\frac{1}{6}$16 and $\frac{1}{3}$13.

Easy

< 1min

Consider the fractions $\frac{1}{6}$16 and $\frac{1}{4}$14.

Easy

< 1min

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