The average of 4 terms is 30 and the Ist term is $$\frac{1}{3}$$ of the sum of the remaining terms. What is the first term?
Sum of the 4 terms = average $$\times$$ no. of terms = 30 $$\times$$ 4 = 120
1st term =Â $$\frac{1}{3}$$ of the sum of the remaining terms
1st term = $$\frac{1}{3}$$ of the sum of the (all terms - )
$$\frac{first term}{3} + first term = 120 \times \frac{1}{3}$$
1st term $$\times$$ $$\frac{4}{3}$$ = 40
1st term = 30
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