A, B and C can complete a certain work in 30 days. B and C together can complete the same work in 45 days. If B is 20% more efficient than A, then B alone can complete one-third of the same work in:
An article was sold at a profit of 12%. If the cost price would be 10% less and selling price would be Rs.5.75 more, there would be profit of 30%. Then at what price it should be sold to make profit of 20%.