if u calculate 3 1/4 u would get 13/4
This means to get the reciprocal fraction of 13/4 just turn it upside down like this
13/4= 4/13 so ur answer is 4/13
There are a couple of ways to look at this.
1) Set up a ratio: 2 cups sugar to 5 cups flour = 5 cups sugar to x cups flour
2/5 = 5/x
cross multiply
2x = 25
x = 12 1/2 cups flour
2) Look at the factor by which the cups of sugar was increased and increase
the cups of flour by the same factor.
2x = 5
x = 2.5
The sugar was increased by a factor of 2.5 so increase flour by same factor.
5(2.5) = 12 1/2 cups flour
Answer:
Step-by-step explanation:
answer:
3x - 18 = 2y
5x - 6y = 14
5x - 3*(2y) = 14
5x - 3*(3x - 18) = 14
5x - 9x + 54 = 14
-4x = -40
x = 10
3*10 - 18 = 2y
30 - 18 = 2y
12 = 2y
y = 6
