Suman covers a certain distance by car, driving at 22 km/hr, and he returns to the starting point, riding on a scooter at a speed of 17 km/hr. Find the average speed for the whole journey.
19(\( \frac{7}{39} \)) km/hr
20(\( \frac{7}{39} \)) km/hr
17(\( \frac{7}{39} \)) km/hr
18(\( \frac{7}{39} \))km/hr
Hari travels from City A to City B. If Hari drives his car at \( \frac{2}{3} \) of his normal speed, then he reaches City B 30 minutes late. Find the time (in minutes) that Hari would have taken to travel from City A to City B if he drove at his normal speed.
100 chickooes were bought at ₹1,210 per hundred and were sold at a profit of ₹940. Find the selling price (in ₹) per dozen of chickooes.
Vipul invests a sum of ₹5,400 and Vijay invests a sum of ₹9,400 at the same rate of simple interest per annum. If, at the end of 5 years, Vijay gets ₹480 more interest than Vipul, then find the rate of interest per annum (in percentage).
A company offers a buy 2 get 1 free scheme on pens priced at ₹10 each. What is the effective discount percentage?
27\( \frac{2}{3} \)%
27\( \frac{1}{3} \)%
33\( \frac{2}{3} \)%
33\( \frac{1}{3} \)%