Three workers can do a job in 12 days. Two of the workers work twice as fast as the third. How long would it take one of the faster workers to do the job himself?
A motorist must complete 180-mile trip is 4 hours. If he averages 50 miles an hour for the first three hours of the trip , how fast must ( in terms of mile per hour ) he travel in the last hour?
A 40-meter long rope is cut into two unequal pieces. If one piece is 18 meter longer than the other, what is the length ( in meter ) of the shorter piece?
In a cricket tournament 30,000 tickets were sold. One-fourth of the tickets were sold at TK. 30 each, 1/3 were sold at TK. 25 each, and the remaining tickets were sold at TK. 20 each. How many tickets were sold at TK. 20 each?
