Solve using the Percent proportion.

A bicycle cost $250 last year. The same bike cost $200 this year. What percent of last year’s cost is this years cost?

Please help! This question is worth 10 points!

20% is my answer!

Step-by-step explanation:I first took the cost last year minus this year ($250-$200= $50. I then used $50 as a percentage of $250 which is 20%, hence 20% goes into 100% five times just like $50 goes into $250 five times. Hope this is the answer you are looking for.

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.