Question

The sum of three consecutive odd multiples of 5 is 285. Find the number

Answer 1

consecutive multiples are
x
5+x
10+x
15+x
20+x
x+5+x+10+x+15+x+20+x=285
5x+50=285
5x=285-50
5x=235
x=235/5
x=47
now you can find the multiples

Answer 2

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