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4 years ago

6

It costs $300 to join the new Superfit Gym.You then pay $15 each month and $2 each time you work out Carlo thinks he will use th

e gym about 20 times each month for a year. Calculate the cost of using the Superfit Gym for one year.

1 answer:

Dahasolnce [82]4 years ago

7 0

300 + (((15+2)x20)x12)
&4380

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<u>SOLUTION: </u>

Given, Myers balloons cost $1.25 each, and latex balloons cost $0.75 each. We have to find what equations can be used to find the number of each of balloon in a bunch of 18 balloons that costs $19?

Let number of myers balloons be m, and number of latex balloons be n.

Then m + n = 18 ⇒ (1)

And according to given information,

$1.25 x number of myers ballons + $0.75 x number of latex balloons = $19

⇒ 1.25m + 0.75n = 19 ⇒ (2)

Hence, we can use the equations m + n = 18 and 1.25m + 0.75n = 19 to find number of each balloon.

Now, (1) ⇒ m = 18 – n. substitute these values in (2)

(2) ⇒ 1.25(18 – n) + 0.75n = 19

22.5 – 1.25n + 0.75n = 19

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0.5n = 3.5

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Then, m = 18 – 7 ⇒ m = 11.

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