Question

c) A box of containing a 100 paper clips fell on the floor. Betty picked up 2/5 of the paper clips and Joanne picked up 3/10. i.How many were still on the floor?​

Answer 1

30 paperclips were still on the floor.

Explanation:

First, we need to make sure that both of the fractions have the same denominator so that they will be measured on the same scale. 2/5 -> will be 4/10 when multiplied by 2. Now we calculate how many paperclips were picked up. 4/10 + 3/10 = 7/10 which means that 70 paperclips were picked up because 7/10's of a 100 is 70. Next we find the paperclips on the floor 10/10-7/10 = 3/10 or 30 paperclips.