Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
|
No Answers Yet
Help Reema! Anyone can contribute an answer, even non-tutors.
Percentage and speed
Date Posted: 5 years ago
Views: 417
same dist
speed = dist/time
100% = dist/time
100% x time = dist
120% = dist/(time-1)
120% x time - 120% = dist
120% x time - 120% = 100% x time
20% x time = 120%
time = 6
new speed = dist/(time-2)
new speed = dist/(6-2)
new speed x 4 = dist
new speed x 4 = 100% x 6
new speed = 100% x 6/4 = 150%
50% increment in speed
ALT
100% = 1/time
120% = 1/(time-1)
1.2 = time/(time-1)
6(time-1) = 5time
6time - 6 = 5time
time = 6
new speed x 100% = 1/(time-2) = 1/4
new speed x 1/6 = 1/4
new speed = 6/4 = 1.5 = 150%
50% increment in speed
speed = dist/time
100% = dist/time
100% x time = dist
120% = dist/(time-1)
120% x time - 120% = dist
120% x time - 120% = 100% x time
20% x time = 120%
time = 6
new speed = dist/(time-2)
new speed = dist/(6-2)
new speed x 4 = dist
new speed x 4 = 100% x 6
new speed = 100% x 6/4 = 150%
50% increment in speed
ALT
100% = 1/time
120% = 1/(time-1)
1.2 = time/(time-1)
6(time-1) = 5time
6time - 6 = 5time
time = 6
new speed x 100% = 1/(time-2) = 1/4
new speed x 1/6 = 1/4
new speed = 6/4 = 1.5 = 150%
50% increment in speed
Thanks a ton!
welcome
360 Tutoring Program