Below is an instruction that describes a task. Write a response that appropriately completes the request in Thai. Please answer in Thai.

### Instruction:
Maggie picked 40 apples. Kelsey picked 28 apples. Layla picked some apples, too. The three averaged 30 apples picked. How many did Layla pick?

### Response:
 พวกเขาเก็บรวมกันไป 3*30=<<3*30=90>>90 ลูก
มีแอปเปิ้ลที่เก็บไปแล้ว 40+28=<<40+28=68>>68 ลูก
ดังนั้น เลย์ลาเก็บไป 90-68=<<90-68=22>>22 ลูก