The cost of 15 metres of a cloth is Rs. 981. What length of this cloth can be purchased for Rs. 1308 ?
Let cloth bought = x m
Cloth in m : Cost :: Cloth : Cost
15 : Rs. 981 :: x : Rs. 1308
(more amount more cloth)
∴x=1308×15981=20
∴ Cloth purchased = 20 m