1. Helen's electronic book reader shows that she has already read 80% of a book. How many pages does she have left to read if the book has a total of 90 pages?
2. There are 60 parking spaces on a parking lot and 24 of them are occupied. Find the percentage of free parking spaces.
3. An adult human has 32 teeth, which are divided into four groups: incisors, canines, premolars, and molars. If a human has 4 canines, what percent of teeth are not canines?
4. Joe works at a warehouse. If he needs 5 hours to sort 45 boxes, how many boxes can Joe sort in 4 hours?
5. Peter went to a florist to buy a bouquet. He liked a bouquet with 7 roses and 5 tulips, but he wants to have 24 flowers in his bouquet. How many roses and how many tulips should he order to have the same ratio of roses to tulips?
6. In a book shop in Prague, there were 288 books and 3/8 of them were English books. Find the number of English books in the shop.
7. What is the length of a rectangle if the ratio of its length to its width is 5:6 and its width is 66 inches?
8. There are 88 flowers in a garden. The ratio of roses to tulips is 3:8. How many tulips are in the garden?
PLS HELP
1. 90(.8) = ?
2. 60-24=x ; x/60= ?
What do you know about the rest?
3. Total = 32 teeth
4 are canines
Not canines = 32 - 4 = 28 teeth
= 28/32 * 100 = 87.5
= 87.5% are not canines
4. 5 hours sort 45 boxes
1 hour : 45/5 = 9
4 hours : 9 * 4 = 36 boxes
5. Because simple form:
He liked a bouquet with 7 roses and 5 tulips, but he wants to have 24 flowers in his bouquet.
So set he wants to have 7 roses and tulips
then 7 + 5 = 12
24 / 12 = 2
So 7 * 2 = 14
5 * 2 = 10
therefore simple form result:
14 roses and 10 tulips
6. 288 books and 3/8 of them were English books
So the number of English books in the shop will be:
N = 288 * 3/8 = 108
7. According to the question, Length : width = 5:6
And it’s width is 66 inches, Length : 66 = 5:6
Length = 5 * 66 / 6 = 55 inches
8. ratio = 3:8
Total flowers = 88
Tulips = 8 ratio
Total = 3 + 8 = 11
=> 8/11 * 88 = 64 tulips