2 answers:
Answer:
x = 3
y = 9
Step-by-step explanation:
→ ( 1 )
- Use cross multiplication to the above equation.
3x = y → ( 2 )
x + y = 12 → ( 3 )
- Now you can put 3x instead of y to equation (3) according to equation (2).
<u>Let us solve.</u>
x + y = 12
x + 3x = 12
- And now you can solve the above equation and find the value of x.
4x = 12
Divide both sides by 4.
x = 3
- Now we can put 3 instead of x to any equation here and find the value of y.
<u>Let us take equation ( 2 )</u>
3x = y
3 × 3 = y
9 = y
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the answer is 5 if you need an explanation ask for it in the comments
Answer:
$392
Step-by-step explanation:
Given the expression :
Total cost = 20a + 13c
a = adult
c = student
The total cost for 4 adults and 24 students
a = 4 ; c = 24
Total cost :
20(4) + 13(24)
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= $392

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answer:
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18,000.00.This is the answer