To find the percentage of £48 you divide by 10 which gives you 4.8 to find 25% you know that 4.8 is 10% so 4.8+4.8=9.6 20%=9.6 to find 5% half 10% which = 2.4 in conclusion 9.6+2.4=12 20%+5%=12 £48+£12=£60 At the price window says, “that will be £60 please”.