Bachhu Manjhi earns Rs 24000 in 8 months. At this rate,
(a) how much does he earn in one year?
(b) in how many months does he earn Rs 42000?
(a) Rs 36000
(b) 14 months
(a) Monthly = 24000/8 = 3000. For 12 months: 3000×12 = 36000.
(b) Time = 42000/3000 = 14 months.