Answer:
680
Step-by-step explanation:
Ratio of red to white 4 : 7
Number of white = 280
White + red buttons = x
7x / 11 = 280
7x = 280 * 11
7x = 3080
x = 3080 / 7
x = 440
Number of red buttons 440 - 280 = 160
Number of red bottons ;
Blue + red buttons = x
3 : 2 ; blue : red
3 + 2 = 5 ;
2x / 5 = 160
2x = 160 * 5
2x = 800
x = 800 / 2
x = 400
Number of Blue buttons :
400 - 160 = 240
Total :
White + red + blue
280 + 160 + 240 = 680 buttons
It is a mixed number because 12/2 can be written as 6 instead of 12/2
Rise over run or how much it goes up or down over how much it goes left or right
Well since the pattern is odd, even, odd, even you are just as likley to pull on odd (<span>not evenly divisible by 2) numebr as an even number, so the option is C.
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Given:
To verify:
for the given values.
Solution:
We have,
We need to verify .
Taking left hand side, we get
Taking LCM, we get
Taking right hand side, we get
Taking LCM, we get
Now,
Hence proved.
