ash011519

10.10.2019 • 

Mathematics

The food mart grocery store has a candy machine like one pictured here . each time a child inserts a quarter, 7 candies come out of the machine. the machine holds 15 pounds of candy contains about individual candies . 1. represent the number of candies in the machine for any given number of customers. about how many customers will be there before the machine is empty ?

Ответ:

viktoria1198zz

05.04.2022

Mathematics

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P r o p o r t i o n s

3:4 = 7

3/198 = 7/x

solve for x using cross multiplying

3/198 = 7/x

198(7) = 3x
1386 = 3x
/3         /3
   462 = x

Therefore, there are 462 workers.

Proof:

3/198 = 4/x
198(4) = 3x
792 = 3x
/3        /3
264 = x

264 + 198 = 462.

264 / 4 = 66
198 / 3 = 66
462 / 7 = 66

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