6. A two-story building measures 21 feet
1 answer:
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Answer:
The number will be
Step-by-step explanation:
Let us assume the number as .
Given:
⇒ less than twice a number that will be
, which is equal to half the difference of three times the number and 13
We have to find the number.
Solution:
The difference of three times the number and 13 could be represented as :
The value be equal to of this
⇒
As we can see here,
- That we got a equation ⇒
Now, we can solve the above equation:
We have multiply both sides by ⇒
then, ⇒
⇒
Hence we can say that number which was assumed as will be
There are 300 seats in the theater.
Step-by-step explanation:
Given,
Cost of one VIP ticket = $20
Cost of one regular ticket = $8
Worth of sold out tickets = $3600
Let,
x represent the number of VIP tickets sold
y represent the number of regular tickets sold
20x+8y=3600 Eqn 1
y = 2x Eqn 2
Putting value of y from Eqn 2 in Eqn 1
Dividing both sides by 36
Putting x=100 in Eqn 2
Total = x+y = 100+200 = 300
There are 300 seats in the theater.
Keywords: linear equation, substitution method
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