A' can complete the 60% of the work in 9 days, while 'B' can complete the work in 7(1/2) days. If they work together, then in how many days will the work be completed?
The sum of the cost price of two bikes is ₹50,000. The first bike was sold at a profit of 20%, and the second bike at a loss of 20%. If the selling prices are the same, what is the cost price (in ₹) of the first bike that was sold?
The toal number of students in class A and B is 72. The number of students in A is 40% more than that in B. The average marks of students in B are 50% more than that of students in A. If the average marks of all the students in A and B are 58, then what are the average marks of students in B?