Easy math question for test
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Easy math question for test

[From: ] [author: ] [Date: 12-01-23] [Hit: ]
which will give us the price of the child tickets!-For the 2nd question: The equation for the first day is 3s + 1c = 38The equation for the second day is 3s + 2c = 52Subtract the first equation from the second equation 3s + 2c = 52-3s - 1c = -38---------------------- 0s + 1c = 14c=14Plug that value in to either of the equations to find s.......
(move the 3x to the other side, when u do this u must reverse the sign)
y = 38 -3x

second day:

3x +2y = 52

look above, we know that y is 38-3x, so lets substitute it! in this way we make only one unknown variable in the eqaution instead of two!

3x + 2(38-3x) =52
3x + 76 -6x =52
-3x =52 -76
-3x = -24
3x = 24
x = 24/3
x=8
of look! we found the price of the adult tickets! now lets substitute it into one of our equations to find the y value, which will give us the price of the child tickets!

-
For the 2nd question:

The equation for the first day is 3s + 1c = 38
The equation for the second day is 3s + 2c = 52
Subtract the first equation from the second equation
3s + 2c = 52
-3s - 1c = -38
----------------------
0s + 1c = 14

c=14

Plug that value in to either of the equations to find s.

-
d = vt
v + w = 158
v - w = 112
2v = 270
v = 135 km/hr
w = 23 km/hr
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