Linus received 12 marks more in Test 2 than his score in Test 1. This was a 15% improvement. He then made another 4-mark improvement in Test 3.
(a) What was his score for Test 1?
(b) What was the percentage increase in his test score from Test 2 to Test 3?
Give your answer correct to 1 decimal place.

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.

answer: 1.06 km per sec

step-by-step explanation:

39.6 m=63.72 km

60 min in an hour so 63.72/60=1.06