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Evie is making wedding invitation cards in three different colours — blue, green and purple. She uses the different colours in the ratio 2 : 7 : 3. Evie has made 12 green cards so far and has 72 more green cards to make. Work out how many purple cards she will need to make.

Respuesta :

wynnteo2006

Answer:

she needs to make 36 purple cards.

Step-by-step explanation:

B : G : P

2 : 7 : 3

the 7 units belongs to the green and the qn stated that she needs to make 72 more cards after the 12 that she made in order to have the 7 units of green card.

Thus,

7 units = 12 + 72 = 84

1 unit = 12

3 units(amt of purple cards needed)= 12 × 3 = 36 #

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