Answer :
[tex]\pounds \ 680 \cdot 15\ \% = \pounds \ 680 \cdot 0.15=\pounds \ 102\\\\\pounds \ 680 + \pounds \ 102 = \pounds \ 782[/tex]
a) multiply 680 x 15 = 10,200
b) divide 10,200 by 100 = 102
c) Add 680 + 102 = £782
b) divide 10,200 by 100 = 102
c) Add 680 + 102 = £782