Number and Operations

Psychguy98

Junior Member
Joined
Dec 17, 2010
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147
Nassim goes to the gym to work out once every two days, and Wang goes to the same gym to work out once every three days. If both Wang and Nassim go to the gym today, on how many of the next 100 days will Nassim and Wang will go to the gym on the same day?

a. 12

b. 15

c. 16

d. 18

e. 20
 
How many numbers btween 1 and 100 are divisible by both 2 and 3?.
 
Psychguy98 said:
that's a little tedious. Isn't there a shortcut, like division?
I was giving you an "example"; sure, there is a shortcut(s);
but you'll get more out of this if you "find" it yourself. :wink:
 
Psychguy98 said:
can we do 100/6?
Yes; 100/6 = 16.666.... = 16 rounded.
6,12,18,24,30,36,42,48,54,60,66,72,78,84,90,96
If you're not too tired, count those: you should get 16 :shock:
 
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