At 12:45 Jimmy left his home in Pinetrees and cycled to visit his grandmother in Oakville. On his way he stopped for 10 minutes in Rowan for a coffee and then he popped in to see his friend in Yewton. He arrived in Oakville at 16:25. Jimmy cycled at a steady speed of 24 km/h and his average speed for the whole journey, including the stops, was 18 km/h. For how long did Jimmy stop in Yewton?
A. 40 minutes
B. 45 minutes
C. 55 minutes
D. 60 minutes

21

step-by-step explanation:

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step-by-step explanation:

multiplication is multiplication.   it might feel harder depending on what level of math you are in, but generally it will be the same old stuff, while implementing some new concepts and methods of solving work.

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x