Two pulleys are connected by a belt. The sum of the diameters of the pulleys is 92.6 cm and while one makes 50 rev/min the other make 200 rev/min. What will be the diameter of the pulleys?

(a) 18.53 cm, 74.07 cm

(b) 19.65 cm, 64.89 cm

(c) 20.01 cm, 78.09 cm

(d) 17.69 cm, 69.90 cm

I got this question in examination.

My doubt is from Power Transmission System in division Ignition and Power Transmission of Farm Machinery