7. John is cooking cupcakes. The recipe calls for 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 the extra cups of flour John put in, we need to subtract the correct amount of flour from the amount he actually put in.
To subtract 3 3/10 cups from 35/8 cups, we need to convert them to the same denominator:
3 3/10 = 30/10 + 3/10 = 33/10
Now, we can subtract:
35/8 - 33/10 = ((35 * 10) - (33 * 8)) / (8 * 10) = (350 - 264) / 80 = 86/80
Simplifying the fraction, we get:
86/80 = 43/40
So, John accidentally put in an extra 43/40 cups of flour.