CAIE IGCSE Mathematics Core C1.12.1 Use Common Measures of Rate Questions

Work through Core CAIE IGCSE Mathematics rate questions by converting units and applying rates to time, money and quantities.

Exam points

convert rates between compatible units such as km/h, m/s, g/s and m/min
calculate time, pay, cost and output from a rate
keep units consistent when multiplying or dividing by a rate

[Maximum number: 2]

The speed limit on a road is $80 \mathrm{~km} / \mathrm{h}$ .

Sophie drives at a speed of $1200 \mathrm{~m} / \mathrm{min}$ .
Show that Sophie drives at a speed lower than the speed limit.

$\frac{1200 \times 60}{1000} \quad \frac{80 \times 1000}{60}$
72 1333[.3...]
If M0 scored, SC1 for [speed =] 72 or
1333[.3...]

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CAIE IGCSE Mathematics Core C1.12.1 Use Common Measures of Rate Questions question 1