A complete load of concrete = 8 parts gravel + 7 parts water + 5 parts cement.
Total number of parts in every load = 8 + 7 + 5 = 20 parts
If total load = 220 kg, then 20 parts = 220 kg
Divide each side by 20 : 1 part = 11 kg
gravel = 8 parts = 8 x 11 kg = <em>88 kg</em>
water = 7 parts = 7 x 11 kg = <em>77 kg</em>
cement = 5 parts = 5 x 11 kg = <em>55 kg</em>
<u>Check:</u> 88 + 77 + 55 = 220 yay !
It is A and D because as you can see it is using subtraction and multiplication and I’m sorry if I am wrong I can’t see much
D(250/300)=90
d=108mi
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Answer: Least value: 15 Greatest value: 30
Median:21, it's in the center of the box plot,
upper quartile: 17 lower quartile:27
IQR: 10
Step-by-step explanation
