$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 :)
624 divided by 5 is (and thats your answer)
21/100
Because that’s what I think it is
4.5% of $149.99 is 67.4955 which means he will make $67.50