Question

there are 2100 trees of different types in Shruti 's be filled out of these 25% are mango tree 20% of coconut tree 40% of jackfruit trees and remaining trees are of betel nut how many betel nut trees are there in that field​

Answer 1

$100\% - (40 + 25 + 20)\% \\ 100\% - 85 \%\\ 15\%$

there are 15% of 2100 trees betel nut in that field.

$\frac{15}{100} \times 2100 \\ 15 \times 21 \\ 315 \:$

There are 315 trees of betel nuts.