skillrack Exam Numerical Ability Averages

The average weight of 8 boxers is increased by 1.5kg. When the boxer whose weight is 65kg is replaced by a new boxer, what is the weight of new boxer?

Read Solution (Total 2)

77 kg.

Let the average weight of 8 boxers was 'x' kg.
When a boxer of weight 65 kg. is replaced by a new boxer of 'y' kg, then
New average= (8x - 65+y)/8 = x+1.5
=> 8x -65+y = 8x+12
=> y=77
7 years agoHelpfull: Yes(1) No(0)

ans:72
total weight=8*1.5=12
therefore the new boxer weight is=65+12=72
6 years agoHelpfull: Yes(0) No(0)

skillrack Other Question

what is the highest power of 15 that will divide 90 exactly #include
#include

int main()
{
char str[100],ch,ctr=0;
int index=0;
scanf("%sn%c",str,&ch);
while(str[index])
{
if(str[index++]==ch)
{
ctr=ctr+1;

}
}
// index++;
printf("%d",ctr);
}