Anonymous

1. at noon, a train leaves bridgton heading east at 90 mi/hr to cogsville, 450 miles away. at 12:15pm a train leavs cogsville heading west to brigdton at 100 mi.hr. at what time will they pass each other?

2. a jar contains 40 coins consisting of dimes and quarters and having a total value of \$4.90. how many of each kind of coin are there?

3. a man invested \$6000, part of it at 5% simple interest and the rest at 7% simple interest. if his annual interest is \$372, how much did he invest at each rate?

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• Anonymous

I will get back with you A.S.A.P. Cheers!

1. After 15 minutes, the first train has travelled 22.5 miles. The trains are now 427.5 miles apart. Since they approach each other at a combined speed of 190 m/h, they will pass in 2 ¼ hours, at 2:30 pm.

2. d + q = 40

10d + 25q = 490 Solve simultaneous equations.

10d + 10q = 400

15q = 90

q = 6 --> d = 34

3. S1 + S2 = 6000 (S for "stash." Why not.)

S1*.07 + S2*.05 = 372 Simul eqs again.

S1*.05 + S2*.05 = 300

S1*.02 = 72

S1 = \$3600 S2=\$2400