 
 <prompt> Marcus ni 18 pebbles. O pa ọkan lati won lori iwe, sugbon Freddy rọ pe ọkan miiran 30 pebbles. Níbèèrè, ni o ni pebbles? <response>: Marcus ni 18/2 = 9 owo pebbles.
Lati Freddy fun un, o ni 9 + 30 = 39 pebbles.

Adura ni 39. 