Varun · 2026-06-04 · 3 helpful
Avg ht of 22=x;
total ht of 22=22x
Given, When 2 leaves;
Avg ht of 20=x+2
Given, Avg Ht of 2 tods=x/3
Ht of 2 tods=2*(x/3)
After deducing above statements; Now we want to find “avg ht of 20”, which can be found by dividing 20 with total ht of those 20, so to find subtract ‘total ht of 2(who left)’ from ‘total ht of 22’. Therefore,
22x-(2x/3)=20(x+2)
x=30;
Therefore, Avg ht of 20= 32inches
total ht of 22=22x
Given, When 2 leaves;
Avg ht of 20=x+2
Given, Avg Ht of 2 tods=x/3
Ht of 2 tods=2*(x/3)
After deducing above statements; Now we want to find “avg ht of 20”, which can be found by dividing 20 with total ht of those 20, so to find subtract ‘total ht of 2(who left)’ from ‘total ht of 22’. Therefore,
22x-(2x/3)=20(x+2)
x=30;
Therefore, Avg ht of 20= 32inches