For this case we first calculate the rate in blocks per minutes.
rate = (15.5) / (35) = 0.443 blocks per minutes.
Then, we can go to blocks per hour.
Remember: 1h = 60min.
rate = 0.443 * (1/60) = 0.00738 blocks per hour.
answer
his rate in blocks per hour is 0.00738 blocks per hour.
Math can help you when you go to a store and buy stuff. Like when you go to the store when you're older and giving in money for what your buying. Or seeing if you have enough money to buy stuff. Hope it helps :)