A train goes twice as fast downhill as it cango uphill, and 2/3 as fast uphill as it can goon level ground. If it goes 120 mph downhill, how long will it take to travel 45 miles on flatland

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23