exam Maths Puzzle Numerical Ability

A bicyclist rode into the country for 5 h. In returning , her speed was 5 mi/h faster and the trip tool 4 h.What washer speed each way?

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Q. The radius of circle is 14 cm. A chord of this circle subtends an angle of measure 120 at the centre. Find the area of the minor segment formed by this chord.(sqare root of 3=1.73)

i really have a big problem in understanding how equations are formed from word problems. could you please show me step by step their formation and the reasons why particular varia