15 Ellie delivers boxes of vegetables. In November she delivered 26 boxes every day for 29 days.
The boxes come in two sizes, small or large.
A large box costs £8 and a small box costs £5.
400 of the boxes she delivered in November were small.
She estimates that she has taken £4800 from the sale of the vegetable boxes in November.
Check whether this estimate is close to the exact amount taken.
( 6 marks ]
I