The sum of seven numbers is 235.the average of the first three is 23 and that of the last three is 42.the fourth number is?
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Answered by
32
given avg of 1 st three numbers is 23
sum of 1st 3 numbers=23*3=69
also last three no. avg=42
es um of last 3 numbers=126
hence sum of all 6 number accept 4 th no. is
126+69=195
hence 4 th no. = total sum -195
=235-195
=40 ....
sum of 1st 3 numbers=23*3=69
also last three no. avg=42
es um of last 3 numbers=126
hence sum of all 6 number accept 4 th no. is
126+69=195
hence 4 th no. = total sum -195
=235-195
=40 ....
Answered by
2
Step-by-step explanation:
23×2=169
42×3=126
126+69
=195
235-195
=40
hence the fourth number is 40
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