350 hamburgers were sold on Tuesday.
Step-by-step explanation:
Given,
Number of hamburgers and cheeseburgers sold = 774
Let,
Number of hamburgers sold = x
Number of cheeseburgers sold = y
According to given statement;
x+y=774 Eqn 1
y = x+74 Eqn 2
Putting value of y from Eqn 2 in Eqn 1
[tex]x+(x+74)=774\\x+x+74=774\\2x=774-74\\2x=700[/tex]
Dividing both sides by 2
[tex]\frac{2x}{2}=\frac{700}{2}\\x=350[/tex]
350 hamburgers were sold on Tuesday.
Keywords: linear equation, substitution method
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