If Kim's age is x then Sam's age is 3*x -2 years.
Answer: Chris reached Boston at 10:24 a.m.
Explanation:
Since we have given that
Speed at which Chris ran from Newton to Boston = 15 km/h
Speed at which Goffy ran from Newton to Boston = 12 km/h
Time at which both started = 10:00 a.m.
Time at which Goffy reached Boston = 10:30 a.m.
That means Goffy takes half an hour to reach Boston,
so, Distance between Newton and Boston is given by

So, Time taken by Chris to ran from Newton and Boston is given by

So, Chris reached Boston at 10:24 a.m.
The formula for this is A=P(1+rt), where A is the amount at the end of whatever time at whatever interest rate, P is the amount you initially deposited, r is the interest rate, and t is the time in years. Ours would look like this:
A = 591.07(1+{.037}{7}) and A = 591.07(1.259) and A = $744.16
Answer:
He can have 8 cards in each pile amounting at a total of 15 piles of cards.