It takes 2 5/6 seconds to fill up 2 1/6 tires. How many seconds does it take to fill up 7 tires

Question

find The unit rate

Answer 1

2 5/6 = 17/6

2 1/6= 13/6

17/6/13/6 = 17/13

x/7= 17/13

x = 119/13 = about 9.15 seconds to fill 7 tires, if it takes 2 5/6 seconds to fill 2 1/6

it takes 17 seconds to fill 13 tires, 17/13 second to fill 1 tire

7 times 17/13 seconds to fill 7 tires = 7(17)/13 = 119/13 = about 9.15 sec.