14 lessons costs $210. What would 72 lessons cost
2 answers:
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:
$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
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