Mrs. Ruiz bought 5 bags of balloons for a party. Each bag contained 70 balloons. Andy said mrs. Ruiz bough a total of 75.Andy is incorrect what error did Andy make when calculating the total number of balloons

Andy added 70 to 5 instead of multiplying 70 by 5.

Step-by-step explanation:

We have been given that Mrs.Ruiz bought 5 bags of balloons for a party. Each bag contained 70 balloons. Andy said Mrs.Ruiz bough a total of 75. Andy is incorrect what error did Andy make when calculating the total number of balloons.

To find the total number of balloons in 5 bags, we will multiply number of balloons in each bag by 5.

Therefore, the total number of balloons in 5 bags would be 350 balloons.

Andy added 70 to 5 instead of multiplying 70 by 5.

for ex: the reciprocal of 3/4 is 4/3. it is the opposite.

reciprocal definition:

a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: