Jeremy had n boxes of paper clips. There were 20 paper clips in each box. He lost 4 paper clips and shared the remaining paper clips with his 3 friends. How many paper clips did each of them receive?
Level 2 PSLE
Sandy had 4z pears. She ate 1 pear and gave z pears to her friends. Sandy's brother then ate half of the remaining pears. How many pears had she left? Give your answer in terms of z in the simplest form.