Spinning 3 hrs daily, Kanta can spin 1kg cotton balls in 12 days. Spinning 4 hrs daily, how much time (Days) will she take to spin 10kg cotton balls.​

Explanation

For spinning `1` kg cotton balls total time (hours) required are = `3` hrs daily `xx` `12` days.
Time to spin `1` kg cotton balls = `36` hours.
For spinning `10` kg cotton balls, total time required is = `10 xx 36`
=`360` hours.
Time to spin `10` kg cotton balls = `360` hrs
It can be given by formula -
Time to spin `10` kg cotton balls = `4` hrs daily xx `x` days = `360`
`4 x=360`
`x = 360/4`
`x = 90 `days.
Therefore, Kanta will take `90` days to spin `10` kg cotton balls.