Ramalakshmi wrote:Find the four consecutive multiples of 7 whose sum is 294.
Am getting confused with these kind of problems....(sum of consecutive)
Can anyone give the basic formulas that can be used for this kind of problems.
Here's an easy method:
When numbers are evenly spaced, the average = the median.
Thus, 294/4 ≈ 73 is the median of the 4 consecutive multiples of 7.
The next 2 multiples of 7 larger than 73 = 77 and 84.
The next 2 multiples of 7 smaller than 73 = 63 and 70.
Thus, the four consecutive multiples of 7 whose sum is 294 are:
63, 70, 77, 84.
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