(1) Evaluate the following; (a) 25% of 80
(b) 80% of 125
(c) 60% of 120
(d) 45% of 15
(e) 50% of 60

(2) A shopkeeper keeps a record of the number of the items he sells in one day. Of the 150 items he sold, 46% were newspapers, 24% were pens, 12% were books, whilst the remaining 18% were other items. Calculate the number of each item he sold.

To find the precent of something you multiply it by 1/100th of what precentage youre trying to find. That's a really weird way of explaining it... It's easier to show with examples.

Some numbers you probably know off the top of your head (whats 100% of 5 or 50% of 20?) But you can also move the decimal place over twice. 100 becomes 1.00 and 1x5 is 5. Same with 50%, it turns into 0.50 or 0.5. and 0.5x20 is 10...

0.25 x 80 is 20 so 25% of 80 is 20

0.8 x 125 is 100 so 80% of 125 is 100

0.6 x 120 is 72 so 60% of 120 is 72

0.45 x 15 is 6.75 so 45% of 15 is 6.75

0.5 times 60 is 30 so 50% of 60 is 30

and for the shopkeeper

0.46 x 150 is 69 so he sold 69 newspapers (nice)

0.24 x 150 is 36 so he sold 36 pens

0.12 x 150 is 18 so he sold 18 books

and 0.18 x 150 is 27 so he sold 27 "other items"

we can check this by adding together the items sold

69+36+18+27=150

(this only works if they gave us 100% of the items sold)