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Maina can do a piece of work in 12 hours. Muthui can do it in 20 hours. How long would it take Muthui to complete...

Maina can do a piece of work in 12 hours. Muthui can do it in 20 hours. How long would it take Muthui to complete the work if Maina has been working for 7 hours.

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sharon kalunda answered the question on May 6, 2019 at 10:40

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Next: A point A (-1, 3) is mapped onto A¹(8, 12). Fidn the centre of enlargement given that the scale factor is 2.

Previous: A line T passes through points (-3, -5) and (3, -6) and is perpendicular to a line l at (-2, -2).

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