Question

@Mathematics If a girl can ski down a hill 5 times as fast as she can climb up the same hill. If she can ski down the hill and climb up the hill in a total of 9 mins. How many mins does it taker her to climb up the hill?
a)1.8 b) 4.5 c) 7.2 d) 7.8

Answer 1

7.5

Answer 2

how

Answer 3

that is't a choice

Answer 4

5*t + t = 9
6 * t = 9
t = 9 / 6
t = 1.5

5 * t = 7.5

5 * t is the time of her climbing the hill
t is the time of her skiing down

Answer 5

o ok thanx