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by pradeepkaushal9518 » Fri Oct 01, 2010 6:13 am
If y is equal to the sum of the odd integers from 60 to 90 inclusive, and z is the number of odd integers from 60 to 90 inclusive, then what is the value of y+z?

A 1125
B 1126
C 1140
D 1141
E 1156
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by ashokkadam » Fri Oct 01, 2010 6:33 am
Answer is C.

There are 15 odd integers between 60 to 90 inclusive.

So, z = 15.

and y = 15/2(61+89) = 15 * 75

therefore, y + z = 15(75+1) = 15* 76 = 1140.
pradeepkaushal9518 wrote:If y is equal to the sum of the odd integers from 60 to 90 inclusive, and z is the number of odd integers from 60 to 90 inclusive, then what is the value of y+z?

A 1125
B 1126
C 1140
D 1141
E 1156
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