exam Maths Puzzle Numerical Ability

21000=12000(1+r/4)^36 solve for 4

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exam Other Question

Write the scale without units.

1 mm : 92 cm

Any help with equation would be Greatly</b> apreciated.No answers from Solver 311911,please:) At noon, two trains leave from towns 175 miles apart. One train averages 40 mph and the other averages 30 mph. At what time do they meet? (Remeber: distance= rate*time)