Answer:
The value of x would be 
or 
Step-by-step explanation:
Given,
x tons of 10% gravel G mixture is mixed with y ton of 2% gravel G to obtain 5% gravel mixture,
Thus, gravel G in x ton + gravel in y ton = gravel G in the resultant mixture,
⇒ 0.1x + 0.02y = 0.05(x+y),
0.1x - 0.05x = 0.05y - 0.02y
0.05x = 0.03y
Now, resultant mixture is z ton,
i.e. 
From equation (1),
It is number 3 like the 3rd option
Answer:
26 customers
Step-by-step explanation:
Represent customers entering as y and those buying hot dogs as x
Required
Determine the number of people buying hotdogs (x)
Substitute 4x + 9 for y in the second equation
Collect Like Terms
It’s still 50/50. Flipping coins is purely chance. There isn’t an actual pattern, our brain just create one to make sense of things!
