Let us take the example given in section 3.1. Akhila goes to a fair with rupees 20 and want to have rides on the Giant Wheel and play hoopla. Represent this situation algebraically and graphically ( geometrically) .
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Let number of times she played =y
And number of rides she had on giant wheel =x
Given y= 2x
⇒x−2y=0 →equation (1)
Also given that each ride costs 3 rs and a game hoopla costs 4rs. She spent total 20 rs
⇒3x+4y=20 →equation (2)
Multiplying equation (1) by 3 and subtract it from equation (2)
⇒10y=20
⇒y=2 and x=4
⇒ number of times she played =2
And number of rides she had on giant wheel =4
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