Isaac and erik started out at their house and are biking towards each other. isaac started out first, and has already gone 5 kilometers. he bikes at a constant speed of 3 kilometers per hour. erik just left, and rides at 8 kilometers per hour. when the boys meet halfway between their houses, they will continue to the park together. how far will each boy have ridden? how long will it take?

Trent wants to buy 2 packs of trading cards for 3 dollars each. the trading card packs that trent normally buys tend to come in packs of 6, 10, 12, or 15 cards. after selecting 2 packs, trent found that the first pack of cards cost 25 cents per card, and the second pack cost 30 cents per card. trent uses this information to write the equations below in order to compare c, the number of cards in each pack.

Which one ? is the answer and how to find this answer

Kai walked one and two-thirds of a mile on saturday and four and one-sixth of a mile on sunday. how many miles did kai walk?