Question

a number is 56 greater than twice the sum number find the number​

Answer 1

Step-by-step explanation:

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Answer 2

Number is 72

Step-by-step explanation:

• Let the number be x

• Now the sum of the number = z

• Let the number of terms be n

• Average = a

And we know that,

Average, $A = \frac {z}{n}$

So, $z = \frac {1}{3} x + \frac {1}{4} x + \frac {1}{12} x$

= $\frac {2x}{3}$

n = 3

A = $\frac {2x}{3} \times \frac {1}{3} = \frac {2x}{9}$

Now, According to Question,

Number is 56 more than average

i.e. x = $56 + \frac {2x}{9}$

x = 72