How to do this question I need to go to school on 1/9
2 answers:
$7.9 cost of one pack
10 packs cost is $79
She pays $29 + Voucher
From the total $79 we substract the $29 she paid with cash or card.
79-29=50
So the value of the voucher is $50
PS: celia should cut on chocolate. Not healthy for her :)
1 pack = $7.90
10 packs = $7.90 x 10 = $79
Celia pays $29 plus a voucher to equal $79.
29 + (voucher) = 79
(voucher) = 50 <em>subtracted 29 from both sides</em>
Answer: $50
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