Carmen invirtió S/ 20,000 de dos maneras: una parte al 6% y otra al 4%. En total ganó S/ 1,040 en intereses en un año ¿Cuánto invirtió al 4%?

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.

he earned 78.75 in interest.

step-by-step explanation: