Question

Edward went to the market with Rs 4x 2+y2+3y and spends Rs 2x 2+y for a packet of chips and chocolate for the remaining money. How much is the cost of chocolate?​

Answer 1

Edward spent Rs 2
`x^(2)` +
`y^(2)` + 2y on chocolate.

Explanation:

Initial amount with Edward = Rs 4
`x^(2)` +
`y^(2)` + 3y

The cost of a packet of chips = Rs 2
`x^(2)` + y

By assuming that Edward spent all his money at the market, and on both chips and chocolate. Then;

Amount spent on chocolate = Initial amount with Edward - cost of a packet of chips

= (Rs 4
`x^(2)` +
`y^(2)` + 3y) - (Rs 2
`x^(2)` + y)

= Rs (4
`x^(2)` +
`y^(2)` + 3y - 2
`x^(2)` - y)

= Rs (4
`x^(2)` - 2
`x^(2)` +
`y^(2)` + 3y - y)

= Rs 2
`x^(2)` +
`y^(2)` + 2y

Amount spent on chocolate = Rs 2
`x^(2)` +
`y^(2)` + 2y

Therefore, Edward spent Rs 2
`x^(2)` +
`y^(2)` + 2y on chocolate.