Justin wants to simplify the following expression: 80 ÷ 4(25 - 20) x 8

What operation did Justin perform third, and what was its resulting value?

Multiply 4 times 5; 20
Multiply 20 times 5; 100
Subtract 20 from 25; 5
Multiply 20 times 8; 160

Talia took the bus from her home to the bank and then walked back to her home along the same route. the bus traveled at an average speed of 40 km/h and she walked at an average speed of 5 km/h. to determine the time, x, that it took talia to walk home, she used the equation 40(0.9 – x) = 5x. the time of trip 2 is hours. the distance of trip 1 is km.