Answer:
Lucy had 40 books last year.
Step-by-step explanation:
assuming 100% is the percent;
100% + 70%
100 : x
170 : 68
cross multiply = 170x = 100 x 68
-------- ————-
170 170
cancel 170/170
therefore x = 100 x 68 divided by 170
result is 40
Answer:
To find an equal ratio, you can divide or multiply by the same number on the top and bottom of the fraction. For example...
<u>5 x 2</u> = <u>10</u>
7 x 2 14
So, by multiplying 5 and 7 by 2, 10/14 is another fraction that is equal to 5/7. Here's some more possible answers if you need them...
<u>5 x 3</u> = <u>15</u>
7 x 3 21
<u>5 x 4</u> = <u>20</u>
7 x 4 28
Hope this helped you c:
I think it is 5 because you solve it
See attached photo for solution