reindeer (r) have 4 feet and 1 head
elves (e) have 2 feet and 1 head
So, we know that
r+e = 89
2r+4e = 230
Now just solve for r and e.
Wait I just realized the answer you game me or...JULY was kinda confusing can someone explain it a bit simpler
Q: Santa is working with his helpers. He counts 89 heads and 230 feet. How many reindeer and elves are there not including him.
4 answers
ok so do I sub numbers till it equals 230?
No, you don't just start subbing numbers. You solve the system of equations. Since r+e = 89, e = 89-r
Now use that in the other equation, and you get
2e+4r = 230
e + 2r = 115
89-r + 2r = 115
89 + r = 115
r = 26
So, e = 89-r = 89-26 = 63
Now check your answer
26 reindeer + 63 elves = 89 heads
4*26 + 2*63 = 104+126 = 230 feet
Now use that in the other equation, and you get
2e+4r = 230
e + 2r = 115
89-r + 2r = 115
89 + r = 115
r = 26
So, e = 89-r = 89-26 = 63
Now check your answer
26 reindeer + 63 elves = 89 heads
4*26 + 2*63 = 104+126 = 230 feet
Fifi = July + several other names yesterday.
Identity crisis?
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Identity crisis?
It helps YOU to keep the same name — so you can find your other posts easily. Just click on your name when a post is open.
2 answers