7. John is cooking cupcakes. The recipe calls for 3 3 3/10
cups of flour. He accidentally put in 35/8
cups of flour. How many extra cups did he put in
To find out how many extra cups John put in, we need to subtract the correct amount of flour from the amount he actually put in.
The correct amount of flour called for in the recipe is 3 3 3/10 cups.
First, let's convert 3 3 3/10 to a improper fraction:
3 * 10 = 30
30 + 3 = 33
33/10 = (10 * 3 + 3)/10 = 33/10
Now, let's convert 35/8 to an improper fraction:
35/8 = (8 * 4 + 3)/8 = 43/8
Finally, let's subtract the correct amount from the actual amount to find the extra amount he put in:
43/8 - 33/10 = (43 * 10 - 33 * 8)/(8 * 10) = (430 - 264)/80 = 166/80
So, John accidentally put in an extra 166/80 cups of flour.