2005 CEMC Gauss (Grade 7) Problems/Problem 10

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Problem

In relation to Smiths Falls, Ontario, the local time in St. John’s, Newfoundland, is $90$ minutes ahead, and the local time in Whitehorse, Yukon, is $3$ hours behind. When the local time in St. John’s is 5:36 p.m., the local time in Whitehorse is

$\text{(A)}$ 1:06 p.m. $\text{(B)}$ 2:36 p.m. $\text{(C)}$ 4:06 p.m. $\text{(D)}$ 12:06 p.m. $\text{(E)}$ 10:06 p.m.

Solution

When it is 5:36 p.m. in St. John’s, it is $90$ minutes or $3/2$ hours earlier in Smiths Falls, so it is 4:06 p.m. in Smiths Falls. When it is 4:06 p.m. in Smiths Falls, it is 3 hours earlier in Whitehorse, so it is 1:06 p.m. in Whitehorse. The answer is $A$.

See Also

2005 CEMC Gauss (Grade 7) (ProblemsAnswer KeyResources)
Preceded by
Problem 9
Followed by
Problem 11
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CEMC Gauss (Grade 7)