Divide the amount she drove by the total amount she needs to drive, them multiply that answer by 100 to make it a percent. This will give you the percentage she drove. To find the percentage she has left,, subtract from 100%.
64 / 160 = 0.4
0.4 * 100 = 40% ( percent she has already driven)
100% - 40% = 60% left.
Answer:
57 questions correct
Step-by-step explanation:
95% of 60 is 57
37.7
n - 0.47n = 20
0.53n = 20
n = 37.7
the answer is 12.2 for 150 rounded to nearest tenth
