The product of 34 and z

Which number produces a rationale number when multiplied by 1/5

Boris needs to buy plastic spoons. brand a has a box 42 spoons for $2.37. brand b has a box of 72 spoons for $3.57. find the unit price for each brand. then state which brand is the better buy based on the unit price. round your answer to the nearest cent.

In a sale there is 25% of all prices a chair costs £45 in sale how much was it before the sale