Number of pounds of dough used = 3/5 pounds.
Number of pounds of sugar used = 3/4 pounds
Number of pounds of sprinkles used = 2/3 pounds.
Total number of pounds of donuts = Number of pounds of dough used + Number of pounds of sugar used + Number of pounds of sprinkles used.
Plugging values.
Total number of pounds of donuts = 3/5 + 3/4 + 2/3.
We need to add all those fractions.
In order to add fracions, we need to find common denominator (lcd).
We have 5,4 and 3 in denominators.
Least common denominator(lcd) of 5, 4 and 3 is 60.
We need to make each denominator equals 60.
Multiplying first fracion by 12 in top and bottom, we get
3*12/5*12 = 36/60
Multiplying first fracion by 5 in top and bottom, we get
3*15/4*15 = 45/60
Multiplying first fracion by 20 in top and bottom, we get
2*20/3*20 = 40/60.
Therefore,
3/5 + 3/4 + 2/3 = 36/60 + 45/60 + 40/60
= 121/60
Let us convert 121/60 into mixed fraction.
Dividing 121 by 60 we get quotient =2 and remainder =1.
So, the mixed fraction is 2 1/60.
Therefore, Beulah made total 2 1/60 pounds of donuts.
