ratio and proportion
The ratio of 8 books to 20 books
2 : 5
The sum of a number and five is 13. Find the number
8
Tanya has read 3/4 of a book, which is 390 pages. How many pages are in the entire book?
520
There are 20 people in our class. 11 are women. What part of the class are men?
9/20
One-fifth of the sum of r and 6 minus the product of 9 and z
1/5 (r+6) - 9z
A picture is 60cm wide and 1.8m long. The ratio of its width to its perimeter in lowest form is...
1 : 3
Nine less than a number is 9. Find the number
18
If 3 1/2 ounce of cough syrup is used from a
9 1/4 ounce bottle, how much is left?
5 3/4
The sum of two-thirds of r and four-fifths of s, minus 3
2/3 r + 4/5s -3
The ratio of green M & M’s to yellow is 2 : 5. If there are only green and yellow M & M’s in the bag, what is the smallest number of M & M’s possible
7
The ratio of the number of sides of a square to the number of edges of a cube is
1 : 3
Four more than a number is 13. What is the number ?
9
A patient is given 1 1/2 teaspoons of medicine in the morning and 2 1/4 teaspoons at night. How many teaspoons total does the patient receive daily?
3 3/4
g cubed minus the product of 5 and n plus 9 g cubed minus the product of 5 and n plus 9
g3 - 5n + 9
In a box, the ratio of red marbles to blue marbles is 7:4. Which of the following could be the total number of marbles in the box?
(A) 18 (B) 19 (C) 21 (D) 22
(D) 22
If a bus travels 160 km in 4 hours and a train travels 320km in 5 hours at uniform speeds, then the ratio of the distances travelled by them in one hour is
5 : 8
b squared plus the product of 8 and s plus 7
b2+ 8s+7
Two numbers are in the ratio 5: 8 and their sum is 130. Find the numbers.
50 and 80
A car can travel 240km in 12 liters of petrol. How much distance will it travel in 25 liters of petrol?
500 km
There are 65 children in the sixth grade. There are 15 more boys than girls.
a. How many girls are in the class?
b. What is the ratio of boys to girls?
c. If 5 more girls joined the class, what is the ratio of boys to girls now?
a. 25
b. 8:5
c. 1:1
There are ‘b’ boys and ‘g’ girls in a class. The ratio of the number of boys to the total number of students in the class is:
b / b+g
One-fourth of the sum of 6 and x minus the product of 9 and
1/4 (6+x) - 9y
A runner jogs 7 1/2 miles east, 5 1/4 miles south, and 8 2/3 miles west. How far has she traveled?
21 5/12
The greatest ratio among the ratios 2 : 3, 5 : 8, 75 : 121 and 40 : 25 is
40:25
On a shelf, books with green cover and that with brown cover are in the ratio 2:3. If there are 18 books with green cover, then the number of books with brown cover is
27