exam Maths Puzzle Numerical Ability

Trees in urban areas help keep air fresh by absorbing carbon dioxide. A city has $2100 to spend on planting spruce and maple trees. The land available for planting is 45,000 ft2. H

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exam Other Question

Ellen and Kate raced on their bicycles to the library after school.They both
left school at 3:00 P.M. and bicycled along the same path. Ellen rode at a speed
of 12 miles per hour Solve the system by substitution.
3x - y = -7
x + y = -9