Question

31*r+1.1*(35−31)*r = 410.64.

Answer 1

Answer:

11.6

Step-by-step explanation:

Solving with steps as below:

• 31*r+1.1*(35−31)*r = 410.64
• 31r + 1.1*4r = 410.64
• 31r + 4.4r = 410.64
• 35.4r = 410.64
• r = 410.64/35.4
• r = 11.6

Answer is: r =11.6