Shreya hikes up a hill at 5 mph and comes down at 7 mph. If the total time taken for the two-way journey is 3 hours, what is the distance between the hilltop and the foothill?
In what ratio must a supplier mix two varieties of pulses costing ₹10 per kg and ₹30 per kg, respectively, so as to get a mixture worth ₹15 per kg?
The average age of 30 employees in an organisation is 25 years. If 2 new employees with an average age of 41 years join the organisation, then find the new average age of all the employees in the organisation.
The highest common factor and the least common multiple of two numbers are 12 and 120, respectively. If one of the numbers is 60, then what will be the other number?