To make one cheese sandwich, Tina uses one bread roll and two cheese slices One pack of bread rolls which contains 15 rolls is £1.91

Pack of 20 cheese slices is £2.23

She is going to buy enough packs to have exactly twice as many cheese slices as bread rolls. work out the least amount she can spend

Helll ! 1,400 tons of wheat of two different varieties was delivered to the silo. when processing one variety, there was 2% of waste and 3% during the processing of the second variety of wheat. after the processing, the amount of remaining wheat was 1,364 tons. how many tons of each variety of wheat was delivered to the silo?