There are 480 stalks of flowers in a shop. 30% of them are lilies. 45% of them are orchids and the r

There are 480 stalks of flowers in a shop. 30% of them are lilies. 45% of them are orchids and the rest are roses. How many roses are there

30% + 45% = 75%

This means we have 100% - 75% = 25% roses.

25% = 25/100 = 1/4

480/4 = 120 roses