A retired math teacher takes her niece shopping. She tells her niece that they can spend x dollars and
1 answer:
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Answer:
The original duration of the tour is 18 days.
Step-by-step explanation:
Let
the number of days spent be T
Daily expenses be D
Initially ,
total tour expenses was 360
-------------(1)
If he extends his tour for 4 days, he has to cut down his daily expenses by dollar 3
---------------(2)
Expanding the eqaution(2)
DT-3D + 4T -12 = 360
Substituting the value of D
Solving the quadratic equation we get
T = 18 and T = -15
T is the number of gays and it cannot be negative , hence T is 18
Substituting in equation (1) we get
D = 20
Answer:
Step-by-step explanation:
We can add the two equations to eliminate the variable and solve for
:
Now, we can use substitution to solve for :
(given)
Hope this helps :)