Which of the following forms a pair of equivalent rational numbers?
(a) 24/40 and 35/50

(b) -25/35 and 55/-77

Step-by-step explanation:

-25/35 and 55/-77

Simplify the fractions.

= -5/7 and 5/-7

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

step-by-step explanation:

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