converse3
converse3 converse3
  • 03-05-2020
  • Mathematics
contestada

14 lessons costs $210. What would 72 lessons cost

Respuesta :

Sarah06109
Sarah06109 Sarah06109
  • 03-05-2020

Answer:

$1,080

Step-by-step explanation:

To solve, we can make a proportion

14 lessons are $210 and 72 lessons are $x

14/210=72/x

Cross multiply

14*x=210*72

14x=15120

To solve for x, we need to get x by itself. Since x is being multiplied by 14, divide both sides by 14.

14x/14=15120/14

x=1080

So, 72 lessons will cost $1,080

Answer Link
mohamedhhh3
mohamedhhh3 mohamedhhh3
  • 03-05-2020

Answer:

If 14 is equal to 210 so

14---->210

So how much 72 costs

14----210

72-----??

So 72 multiple by 210 all divided by 14 which is original number of courses

(72*210)/14 = 1080

Answer Link

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