P, Q and R contract to do a work for Rs. 1650, P can do a work in 8 days, Q can do a work in 12 days and R can do a work in 15 days, then find the share of R?

P, Q and R contract to do a work for Rs. 1650, P can do a work in 8 days, Q can do a work in 12 days and R can do a work in 15 days, then find the share of R?
1). Rs. 400
2). Rs. 420
3). Rs. 800
4). Rs. 350

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