Solve 45*0.05+55*0.1+65*0.2+75*0.3+85*0.25+95*0.1

$$45 \times 0.05+55 \times 0.1+65 \times 0.2+75 \times 0.3+85 \times 0.25+95 \times 0.1$$

Evaluate

$$74$$

Solution Steps

Multiply 45 and 0.05 to get 2.25.

$$2.25+55\times 0.1+65\times 0.2+75\times 0.3+85\times 0.25+95\times 0.1$$

Multiply 55 and 0.1 to get 5.5.

$$2.25+5.5+65\times 0.2+75\times 0.3+85\times 0.25+95\times 0.1$$

Add 2.25 and 5.5 to get 7.75.

$$7.75+65\times 0.2+75\times 0.3+85\times 0.25+95\times 0.1$$

Multiply 65 and 0.2 to get 13.

$$7.75+13+75\times 0.3+85\times 0.25+95\times 0.1$$

Add 7.75 and 13 to get 20.75.

$$20.75+75\times 0.3+85\times 0.25+95\times 0.1$$

Multiply 75 and 0.3 to get 22.5.

$$20.75+22.5+85\times 0.25+95\times 0.1$$

Add 20.75 and 22.5 to get 43.25.

$$43.25+85\times 0.25+95\times 0.1$$

Multiply 85 and 0.25 to get 21.25.

$$43.25+21.25+95\times 0.1$$

Add 43.25 and 21.25 to get 64.5.

$$64.5+95\times 0.1$$

Multiply 95 and 0.1 to get 9.5.

$$64.5+9.5$$

Add 64.5 and 9.5 to get 74.

$$74$$

Factor

$$2\times 37$$