math
posted by Rob .
Determine whether there are 2 consecutive odd integers such that 5 times the first exceeds three times the second by 54.
Can anyone help???
We're asked:
Determine whether there are 2 consecutive odd integers such that 5 times the first exceeds three times the second by 54.
Let the first odd number be 2k+1, then the next odd number is is 2(k+1)+1=2k+3.
Then 5*(2k+1)=3*(2k+3)+54 so
10k+5=6k+9+54 thus
4k=58
Since 4 does not divide 58 there is no k to satisfy the integers, so the answer is no, the integers don't exist.
The closest k's we could use are 14 and 15.
Consider k=14, then 2k+1=29 and 2k+3=31
We find 5*29=145, 3*31=93 and 14593=52
Consider k=15, then 2k+1=31 and 2k+3=33
We find 5*31=155, 3*33=99 and 15599=56
Check that the problem was entered correctly and that I read it correctly.
Since 5x = 3(x + 2) + =54, 2x = 60 making x = 30 and (x + 2) = 32.
I guess not.
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