Mathematics, 05.04.2021 19:40, awesome266
Nadia walks at an average speed of (x + 2) km/h
for (x - 3) hours and cycles at an average speed of
(3x + 5) km/h for x hours. She covers a total
distance of 74 km.
(i) Form an equation in x and show that it reduces
to 4x2 + 4x - 80 = 0.
(ii) Solve the equation 4x2 + 4x – 80 = 0.
(iii) Find the time taken for her entire journey.
Answers: 3
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Nadia walks at an average speed of (x + 2) km/h
for (x - 3) hours and cycles at an average speed of...
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