Formula help

[Guest]

Is there a formula that would help me calculate the following:
A B
1 45,000 .50
2 50,000 0
3 55,000 1
4 60,000 .25
5 65,000 0

total 92,500

 

[Bob I]

In c1 put =A1*b1 then copy down. Sum the C column to get total

 

[MyVeryOwnSelf]

Is there a formula that would help me calculate the following:

A B
1 45,000 .50
2 50,000 0
3 55,000 1
4 60,000 .25
5 65,000 0

total 92,500

One way:
=SUMPRODUCT(A1:A5,B1:B5)