There are 24 times will a bus stop at the corner between 9 a.m. and 6 p.m.
The addition is taking two or more numbers and adding them together, that is, it is the total sum of 2 or more numbers.
A bus stops at the corner of elm street and oak street every half hour between 9 a.m. and 3 p.m. and every 15 minutes between 3 p.m. and 6 p.m.
There are 6 hours every half hour between 9 a.m. and 3 p.m.
There are 3 hours every 15 minutes between 3 p.m. and 6 p.m.
The number of times will a bus stop at the corner between 9 a.m. and 6 p.m. is;
12 + 12 = 24
Hence, there are 24 times will a bus stop at the corner between 9 a.m. and 6 p.m.
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