Saved Bookmarks
| 1. |
Answer sheetDo not forget your unit of measurements.ticket is P500, how much will be the total sales for a night if all seats aretaken?1. The seats at Cabatuan auditorium were arranged for a one-night concert-fora-cause. There are 20 seats at first row, 25 seats at second row, 30 seats atthird row, and so on for ten rows. How many seats are there in the last rowWhat is the total number of seats are there in the auditorium? If the price per ticket is 500,how much will be the total sales for a nighr if all seats are taken?show ur solution |
|
Answer» Answer: (a) 900 (b)1200 let no. of row =x no. of seats in one row=y total seats hence =xy A.T.Q x=y also 2x .(y-10) =xy+300 •••••••1 put x=y in EQ 1 substitution method 2x.(x-10)=x.x+300 2x^-20x=x^+300 x^-20x-300=0 (x-30)(x+10)=0 x=30. (10 is neglected as no. of rows CANT be negative) hence initial seats =xy =x^ =30.30 =900 seats after NEW arrangement = xy+300 =900+300 =1200 |
|