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Solve the following system of equations using substitution: y = 2x + 3 and 3x - y = 5. What is the value of x?

A. 1
Posted in:  Linear Equations -  Algebra -  Mathematics

If a vehicle travels 300 km in 5 hours, what is its average speed?

B. 60 KM/H
Posted in:  Time, Distance and Speed -  Aptitude -  Mathematics

A store sells pencils for $0.50 each and erasers for $0.75 each. If a student buys a total of 10 items for $6.00, how many pencils did the student buy?

B. 4
Posted in:  Linear Equations -  Algebra -  Mathematics

In a practical problem, a car travels 60 km/h and a truck travels 40 km/h. If they start from the same point at the same time, how far apart will they be after 2 hours?

C. 100 KM
Posted in:  Linear Equations -  Algebra -  Mathematics

If A can do a piece of work in 15 days and B can do it in 10 days, how long will it take for both A and B to complete the work together?

A. 6 DAYS
Posted in:  Time & Work -  Aptitude -  Mathematics