The sum of four consecutive multiples of 7 is 322. Find the smallest multipleinvolved.
Answers
SOLUTION
GIVEN
The sum of four consecutive multiples of 7 is 322.
TO DETERMINE
The smallest multiple involved.
EVALUATION
Let four consecutive multiples of 7 are
7x , 7x + 7 , 7x + 14 , 7x + 21
So by the given condition
7x + 7x + 7 + 7x + 14 + 7x + 21 = 322
So the numbers are 70 , 77 , 84 , 91
FINAL ANSWER
The smallest multiple involved = 70
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Given : The sum of four consecutive multiples of 7 is 322.
To Find : the smallest multiple involved.
Solution:
four consecutive multiples of 7
7k , 7(k + 1) , 7(k + 2) , 7(k + 3)
Sum = 322
=> 7k + 7(k + 1) + 7(k + 2) + 7(k + 3) = 322
=> 7(k + k + 1 + k + 2 + k + 3) = 322
=> 7(4k + 6) = 322
=> 4k + 6 = 46
=> 4k = 40
=> k = 10
70 , 77 , 84 , 91
Smallest multiple involved = 70
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