exam
Maths Puzzle
Numerical Ability
a biker rode 3 hours with a wind of 6 km/h. when he was returnin against the same wind it took 5 hours. what his speed in still air.
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A cyclyist bikes at a constant speed for 20 miles. He then returns home at the same speed but takes a different route. His return trip takesone hour longer and is 25 miles. Find his speed.
The table below gives the closing price of a certain stock at the end of each year from 1990 to 2003. Use the regression capabilities of a graphing calculator to find both a linea