There are 78

cups of sugar in a canister in the kitchen. Ms. Johnson used 12
of the sugar when she was preparing dessert for her daughter's birthday cake. How much sugar did she use?

Ms. Johnson used 12 cups of sugar when she was preparing dessert for her daughter's birthday cake.

There are 7/8

cups of sugar in a canister in the kitchen. Ms. Johnson used 1/2
of the sugar when she was preparing dessert for her daughter's birthday cake. How much sugar did she use?

To find out how much sugar Ms. Johnson used, we need to multiply the amount of sugar in the canister (7/8) by the fraction she used (1/2).

(7/8) * (1/2) = (7 * 1) / (8 * 2) = 7/16

Therefore, Ms. Johnson used 7/16 cups of sugar when preparing dessert for her daughter's birthday cake.

How much did Mr. Romanov pay for 9.3 gallons of gas at $3.30 a gallon?

To calculate the total cost, we need to multiply the number of gallons by the cost per gallon.

9.3 gallons * $3.30 per gallon = $30.69

Therefore, Mr. Romanov paid $30.69 for 9.3 gallons of gas.

One-third of the campers at Rosewood Performing Arts Camp play an instrument. Two-fifths of those campers play the guitar. What fraction of the campers at Rosewood Performing Arts Camp play the guitar

To find the fraction of campers that play the guitar, we need to multiply the fractions representing the proportions.

One-third of the campers play an instrument.
Two-fifths of those campers play the guitar.

So, the fraction of campers that play the guitar is: (1/3) * (2/5) = 2/15

Therefore, 2/15 of the campers at Rosewood Performing Arts Camp play the guitar.

. How-to books make up 0.3 of the books in the school library. Of these how-to books, 0.2 deal with carpentry and 0.4 deal with electronics.

0.3×0.4=0.12
Interpret what the answer 0.12 represents in this equation above.

The answer 0.12 represents the fraction or proportion of the total books in the school library that deal with both carpentry and electronics. This is found by multiplying the fraction of how-to books (0.3) by the fraction of those how-to books that deal with electronics (0.4).

Sara discarded 110

of the 200 apples she picked as defective. The rest were sold as fresh fruit. How many apples picked were sold as fresh fruit