Answer:
17. 2.25 hours or 2 hours and 15 minutes
18. 5 hours
19.480 km
20. 15 kph
Step-by-step explanation:
Let x = the unknown
17. Given: time(1)= 3, distance(1)= 120,
distance (2)=90, time(2)= unknown
Solution:
t(1):d(1)=t(2):d(2)
3:120=x:90
120x=270
x= 2.25 hours
18. Given: t(1)=2, d(1)=10, t(2)=1 ,d(2)=?
solution:
2:10=1:x
2x=10
x=5 hours
19-20 (just follow how the solutions of 17-18 was made(
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Answers & Comments
Answer:
17. 2.25 hours or 2 hours and 15 minutes
18. 5 hours
19.480 km
20. 15 kph
Step-by-step explanation:
Let x = the unknown
17. Given: time(1)= 3, distance(1)= 120,
distance (2)=90, time(2)= unknown
Solution:
t(1):d(1)=t(2):d(2)
3:120=x:90
120x=270
x= 2.25 hours
18. Given: t(1)=2, d(1)=10, t(2)=1 ,d(2)=?
solution:
2:10=1:x
2x=10
x=5 hours
19-20 (just follow how the solutions of 17-18 was made(