Let d be distance travelled when they are level , and t = time that nora took to get level with mason
for Nora
6 = d/t
d = 6t
for Mason
5 = d / (t + 35)
d = 5 ( t + 350
so 6t = 5(t + 35)
solve for t
1 rad=57.3°
288÷57.3=5.02 rad
170.
Area = b x h
17 x 10 = 170
Answer: 11 minutes.
Explanation: 385 words: (385/140) x 4 = 11 minutes
480 - 144 = 336
336 divided by 12 = 28
ANSWER: 28 Hours