Question

Write down two equivalent ratios for each of the following:
2.1 750 : 30
2.2 540 cm : 480 cm
2.3 R3,60 : R2,40 ​

Answer 1

$\\ \sf\longmapsto \dfrac{750}{30}=\dfrac{250}{1}=250:1$

#2

$\\ \sf\longmapsto \dfrac{540}{480}=\dfrac{9}{8}=9:8$

#3

$\\ \sf\longmapsto \dfrac{60}{40}=\dfrac{2}{3}\implies R1:R2::3:2$

Answer 2

Equivalent ratios are ratios of equal unit rates

The equivalent ratios are:

• 1500 : 60, 1080 cm : 960 cm and R7,20 : R4,80 ​
• 2250 : 90, 1620 cm : 1440 cm and R10,80 : R7,20 ​

We have:

750 : 30, 540 cm : 480 cm and R3,60 : R2,40 ​

Multiply the ratios by 2

1500 : 60, 1080 cm : 960 cm and R7,20 : R4,80 ​

Multiply the ratios by 2

2250 : 90, 1620 cm : 1440 cm and R10,80 : R7,20 ​

Hence, the equivalent ratios are:

1500 : 60, 1080 cm : 960 cm and R7,20 : R4,80 ​

2250 : 90, 1620 cm : 1440 cm and R10,80 : R7,20 ​

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