Mathematics, 23.09.2019 19:00 aprilreneeclaroxob0c

1. a box of 80 coins, consisting of only nickels and dimes, is worth 7 dollars and 80 cents. find the number of nickels.
2. two drivers are 420 miles away from each other when they started moving towards each other. they meet after 4 hours. what is the speed of the first car, if the second car's speed is 45 mph?

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1. a box of 80 coins, consisting of only nickels and dimes, is worth 7 dollars and 80 cents. find th...

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