100000 | ( | P | − | 6 5 | ) | − | 40000 | = | 0 |
Left side of the equation = | 100000 | P | − | 100000 | × | 6 5 | − | 40000 |
= | 100000 | P | − | 120000 | − | 40000 |
= | 100000 | P | − | 160000 |
100000 | P | − | 160000 | = | 0 |
100000 | P | = | 0 | + | 160000 |
100000 | P | = | 160000 |
P | = | 160000 | ÷ | 100000 |
= | 160000 | × | 1 100000 |
= | 8 | × | 1 5 |
P | = | 8 5 |
P | = | 1.6 |