How many multiples of 5 are there between 199 and 1,198?

Hint: an = a1 + d(n − 1), where a1 is the first term and d is the common difference.

Question

How many multiples of 5 are there between 199 and 1,198?

Hint: an = a1 + d(n − 1), where a1 is the first term and d is the common difference.

welshfella · Answer

yes this is an arithmetic series where common difference is 5 
The first term here would be 200 as its the next number after 199 divisible by 5

thaliafortunx · Answer

I get stuck at an=205+5n, I don't know if I'm doing the right steps

welshfella · Answer

sorry i got cut off.
The  equation is 

1195  = 200 + (n - 1)d

find n  This will give you the answer

jango_in_dtown · Answer

1195=200+(n-1)*5 therefore 995=(n-1)*5
i.e. n-1=995/5 =199 i.e. n=199+1=200

sshayer · Answer

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