The price of one burger is Rs 40 and a cup of ice cream is Rs 20.
Step-by-step explanation:
Let,
Price of one burger = x
Price of cup of ice cream = y
According to given statement;
x = y+20 Eqn 1
x+2y=80 Eqn 2
Putting value of x from Eqn 1 in Eqn 2
[tex](y+20)+2y=80\\y+20+2y=80\\3y=80-20\\3y=60[/tex]
Dividing both sides by 3
[tex]\frac{3y}{3}=\frac{60}{3}\\y=20[/tex]
Putting y=20 in Eqn 1
[tex]x=20+20\\x=40[/tex]
The price of one burger is Rs 40 and a cup of ice cream is Rs 20.
Keywords: linear equation, substitution method
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