if a=9, b=15, c=7,then find a+b*c-a
Answers
Answer:
Step-by-step explanation:
Given that a:b=5:9 and b:c=4:7.
Here the common term is b which is found in both the ratios.
Ok now let’s look at the value of b in 1st ratio. It is 9. And 4 in the second.
Now we have to take the LCM of these two values so that we are changing the value of b into the LCM value in both the ratios. The LCM is 36.
So we change the value of b into 36 in the 1st and 2nd ratio. 9*4=36. So multiply the whole 1st ratio by 4 making a:b=20:36
Similarly change the value of b as 36 in the second ratio. 4*9=36. Hence multiply the entire second ratio by 9 making b:c=36:63.
Now that the value of b in both the ratio being same we can concatenate them. Hence a:b:c=20:36:63.
Hope you understand the logic!
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Answer:
105 is the correct answer105 is the correct answer.
9+15*7-9=205.
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