## Task 1 - 280521

In a restaurant consisting of a dining hall and a grill restaurant, there are exactly 135 seats available for guests in the dining hall. The number of seats in the grill restaurant is one third of the number of seats in the dining hall.

a) How many seats are available in the restaurant in total?

b) In the summer, additional outdoor seats are added. Their number is twice as large as the number of seats in the grill restaurant.

How large is the seating capacity of the restaurant in the summer?
a) Since $135: 3=45$ and $135+45=180$, a total of 180 seats are available in the restaurant. b) Since $45 \cdot 2=90$ and $180+90=270$, the restaurant's seating capacity in the summer is 270 seats.