Respuesta :
Together they will take;
[tex] \frac{1}{40} + \frac{1}{60} [/tex]
=[tex] \frac{3+2}{120} [/tex]
The find reciprocal,
=[tex] \frac{120}{5} [/tex]
=24 minutes
[tex] \frac{1}{40} + \frac{1}{60} [/tex]
=[tex] \frac{3+2}{120} [/tex]
The find reciprocal,
=[tex] \frac{120}{5} [/tex]
=24 minutes