 <translate> Work done by P in 1 day = 1/24
Work done by Q in 1 day = 1/9
Work done by R in 1 day = 1/12
Work done by Q and R in 1 day = 1/9 + 1/12 = 7/36
Work done by Q and R in 3 days = 3×7/36 = 7/12
Remaining work = 1 – 7/12 = 5/12
Number of days in which P can finish the remaining work = (5/12) / (1/24) = 10
Therefore, the answer is (B). <yor> Iṣẹ́ tí P ṣe lọ́jọ́ kan = 1/24 Iṣẹ́ tí Q ṣe ní ọjọ́ kan = 1/9 Iṣẹ́ tí R ṣe ní ọjọ́ kan = 1/12 Iṣẹ́ tí Q àti R ṣe ní ọjọ́ kan = 1/9 + 1/12 = 7/36 Iṣẹ́ tí Q àti R ṣe ní ọjọ́ mẹ́ta = 3 × 7/36 = 7/12 Iṣẹ́ tó kù = 1 <unk> 7/12 = 5/12 Nọmba ọjọ ti P le pari iṣẹ to ku = (5/12) / (1/24) = 10 Nítorí náà, ìdáhùn náà ni (B). 