Answer: 40 times
Step-by-step explanation:
Given: Total planks = 20
By using integers, Steps forward is represented by +5, Steps backward s represented by -4.
After first set of two steps ( one forward another backward), 5-4 =1 step forward is captured.
For 20 planks , we require 20 such sets, i.e. he will do this 2x 20 times i.e. 40 times.
Hence, he will do this 40 times to reach the other side.
0.08 is 1/10 of 0.8. to do this, you need to multiply 0.08 by 10. the answer is 0.8 ( 8 tenths) the answer in fraction form is 8/10 which can be simplified to 4/5
M is the correct answer
good luck
