Basic questions

How do you write the symbol "per cent" ?

°/°                 °\°              °°/°°

A shop advertises some sales at 30 %. How do the prices of the items which are sold off evoluate?

more expensive less expensive the same

This shop advertises a 50 % discount. How do the prices of the items which are sold off evoluate?

50 € cheaper twice cheaper the same

What operations can we do to calculate 10 % of a number?

multiply the number by 0.1 divide the number by 0.1 multiply the number by 10 divide the number by 10

Can there be anything else than polyamide and elasthanne in the composition of this garment?

yes no we don't know