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A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number?

+2 votes
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A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number?
posted Apr 27, 2016 by Kavyashree

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4 Answers

+1 vote
 
Best answer

Let the be X
then,
3(2x+9)=75
x=8
Ans is 8

answer Apr 27, 2016 by Jaikumar Bhatia
This seams perfect
+1 vote

Let X be the number, then
(2* X + 9) * 3 = 75
X = 8

answer Apr 28, 2016 by anonymous
+1 vote

the number is 4,
after dubling number = 16;
after adding 9 =25;
after trebling resultent=75;
so number is 4.

answer Apr 28, 2016 by Devendra Bohre
Does doubling means squaring (^2) the number or adding itself (x2)?
yes you are right, ther is a mistake, in that condition number will be 8.
You were damn sure that you made my question mistake.
Great
+1 vote

8 is the answer
((2 * 8 ) + 9 ) * 3 = 75

answer Aug 19, 2016 by Padmanabha Vyasamoorthy



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