If X is a multiple of 5,what is the value of X?
(1) 1237 < X < 1242.5
(2) 3711 < 3X < 3727.5
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(1) 1237 < X < 1242.5
(2) 3711 < 3X < 3727.5
[Reveal] Spoiler:
This is unofficial question. I marked E for this. The pdf document says the answer is D.
On dividing statement (2) by 3, we get statement 1. Hence, both statements are same.
Way pdf solved it:
Only one integer multiple i.e. 1240 is present between this range. so this is sufficient => Ans = D
Way I solved it:
X is a multiple of 5 => X can be 1240 or 1240.5 or 1237.5, etc as all of them are multiple of 5, not necessary integral multiple! Ans = E
My Doubt - Am I going wrong somewhere i.e. It is very much necessary that a multiple of an integer (in this case, 5) has to be an integer (in this case, 1240)?
Or Is this question a poor quality question i.e a multiple of an integer (in this case, 5) need not be an integer (in this case, 1237.5 or 1238.995 or ...)?
Thanks!
On dividing statement (2) by 3, we get statement 1. Hence, both statements are same.
Way pdf solved it:
Only one integer multiple i.e. 1240 is present between this range. so this is sufficient => Ans = D
Way I solved it:
X is a multiple of 5 => X can be 1240 or 1240.5 or 1237.5, etc as all of them are multiple of 5, not necessary integral multiple! Ans = E
My Doubt - Am I going wrong somewhere i.e. It is very much necessary that a multiple of an integer (in this case, 5) has to be an integer (in this case, 1240)?
Or Is this question a poor quality question i.e a multiple of an integer (in this case, 5) need not be an integer (in this case, 1237.5 or 1238.995 or ...)?
Thanks!