Charles buys 20 packs of pens. There are 15 pens in each pack.
Each pack costs £2.50.
Charles sells each pen for 65p but he only manages to sell į of the pens.
How much profit did he make?

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!