How fast does water evaporate?

Three dishes start with $120\ \text{g}$ of water each, and they are weighed every $30$ minutes for $150$ minutes. You will make the program find the rate of each, in grams each hour, how long the narrow glass would take to dry out, and how many times faster the wide dish in the sun is than the narrow glass. Then it draws the three lines.

The idea. $\text{rate} = \dfrac{\text{water lost}}{\text{time}}$. A wide surface and warmth make evaporation faster.

Your tasks.

1. Inside the loop, work out rate, the water lost in grams each hour for each dish.
2. Find hours_to_dry, the hours the narrow glass needs to lose the water it still has, at its rate.
3. Find times_faster, the rate of the wide dish in the sun divided by the rate of the narrow glass.