exam
Maths Puzzle
Numerical Ability
In the design of a bridge, an engineer determines that four fewer 18-m girders are needed for the span length than 15-m girders. How many 18-m girders are needed?
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exam Other Question
The width of a swimming pool is 18.5 ft, and the length is 10.75 ft. Write the ratio of length to width as ratio of whole numbers.
Factor 50x^3-90x^2