 
<translate> 'Yan aji na biyar sun dasa itatuwa 30 x 2 = 60. Sau uku adadin bishiyoyi da 'yan aji na biyar suka dasa ya kai 60 x 3 = 180. Don haka, 'yan aji na shida sun dasa bishiyoyi 180 - 30 = 150. Saboda haka, sun dasa duka itatuwa 30 + 60 + 150 = 240. Amsar ƙarshe ita ce: 240. <eng> The 5th graders planted 30 x 2 = 60 trees. Thrice the number of trees planted by the 5th graders is 60 x 3 = 180. So, the 6th graders planted 180 - 30 = 150 trees. Therefore, they planted a total of 30 + 60 + 150 = 240 trees. The final answer: 240. 