Ravi can complete one-fourth of the total work in 15 days, Chavi can complete one-third of the total work in 18 days, Dhani can complete half of the total work in 24 days.
In how much time can Ravi, Chavi and Dhani complete three-fourth of the work together?
13(\( \frac{47}{121} \)) days
10(\( \frac{25}{31} \)) days
11(\( \frac{19}{78} \)) days
12(\( \frac{23}{103} \)) days
Zakir travels from City A to City B. If Zakir drives his car at \( \frac{2}{3} \) of his normal speed, then he reaches City B 10 minutes late.
Find the time (in minutes) that Zakir would have taken to travel from City A to City B if he drove at his normal speed.
Amit bought a piano and sold it to Gopal at a profit of 5%. Gopal sold it to Akshay at a loss of 25%. If Akshay paid ₹1,890, then the cost price (in ₹) of the piano Amit bought is: