Respuesta :
18/25
The shortcut to use is to reduce 4/5 x 9/10 to 2/5 x 9/5. Multiply this to get 18/25.
Or you could do 4/5 x 9/10 to get 36/50 then divide by 2 for 18/25.
The shortcut to use is to reduce 4/5 x 9/10 to 2/5 x 9/5. Multiply this to get 18/25.
Or you could do 4/5 x 9/10 to get 36/50 then divide by 2 for 18/25.