Question

Equations? Thanks!!! :)

1. Which ratio is equal to 5/6?

2. Which ratio is not equal to 4/9

3. Solve the proportion. 16/17 = x/40

4. Solve for a. 4a/9 = 100/45

5. Solve for b. 3/0.8 = 12/b

6. Solve. 3/4 = 21/2+d

7. When surveyed five out of every eight students liked food in the cafeteria. If 60 liked the food how many were surveyed?

Answer 1

For 1. and 2. what are the options to choose from??

3. Solve the proportion. 16/17 = x/40
(16 x 40)/17 = x
so, x = 640/17


4. Solve for a. 4a/9 = 100/45
a = (100 x 9)/(45 x 4)
a = 900/180
a = 5

You can solve 5. and 6. by method used for 3. and 4.

5. Solve for b. 3/0.8 = 12/b

6. Solve. 3/4 = 21/2+d

7. When surveyed five out of every eight students liked food in the cafeteria. If 60 liked the food how many were surveyed?

5/8 :: 60/x
5x = 60 x 8
x = 480/5
x = 96

so 96 students were surveyed