Please help with this math problem: Two soft drinks and an order of french fries cost $5.00, at a football game. . . . . . . . . . . . . . . . .Sam ordered a soft drink and an order of fries for...
Please help with this math problem: Two soft drinks and an order of french fries cost $5.00, at a football game. . . . . . . . . . . . . . . . .
Sam ordered a soft drink and an order of fries for himself and the same for Sally. If Sam paid $7.00, what is the price of a soft drink?
The answer here is that a soft drink costs $1.50 and fries cost $2. Here is how you can get that answer:
Let's let S be soda and F be fries.
We know that 2S + F = 5 because of your first statement. Because of your second statement, we know that 2S + 2F = 7.
So now we can substitute. In the first equation, let's find for F. F = 5 - 2S.
Now we can plug that into the second equation and we now have
2S + 2 (5 - 2S) = 7
2S + 10 - 4S = 7
-2S = -3
S = 1.5
Now we plug this value for S back into one of the equations.
3 + F = 5
F = 2
Cost of 2 soft drinks and one french fries is $5.
Th cost of 2 soft drinks and 2 french fries purchased by Sam for himself and Sally is $5.
Let us say:
Cost per soft drink = s
Cost per french fries = f
Then from the information given on cost of the above two orders we can formulate following 2 simultaneous equation.
2s + f = 5 ... (1)
2s + 2f = 7 ... (2)
Subtracting equation (2) from equation (1) we get:
2s - 2s + 2f - f = 7 - 5
f = 2
Substituting this value of f in equation 2 we get:
2s + 2 = 5
2f = 5 - 2 = 3
f = 3/2 = 1.5
Price of soft drink = $1.5
Price of french fries = $2
Two soft drink and a French fry cost $5
2 soft drink and two fries cost Rs 7. Therefore The second order has an extra fry which costed $(7-7) = $2 more than the former. Therefore a fry cost $2. That implies Ot of $ dollars for the 2nd order he pays $4 for the two fries and 3 dollars for the two soft drink. So the rate of one soft drink is $3/2 = $1.5. This checks well with the first (likel) order the 2 soft drinks costing $3 and a fry costing $2, the total being $5