A sample of University students who were asked how much they spent on their semester projects. One semester project Cost ($) Number of Students
15-24 31
25-34 45
35-44 19
45-54 81
55-64 70
65-74 29

Table 2

Find the following from given Table 2
i) Arithmetic Mean ii) Median Cost iii) Q1 & D4 iv) 25th & 46th Percentile

where is abdul's work? don't see that anywhere posted : /

step-by-step explanation:

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15