13. Five marks exercise problems XI

The price of an item \(x\) increases by \(₹10\) every year and an item \(y\) decreases by \(₹15\) every year. If in \(2018\), the price of \(x\) is \(₹50\) and \(y\) is \(₹90\), then which item will be costlier in the year \(2020\).

 

The price of \(x\) in \(2020\) \(=\) \(₹\)

 

The price of \(y\) in \(2020\) \(=\) \(₹\)

 

Costlier item \(=\) xy