Quantify of sand in a bag =
[tex] = \: 5 \frac{2}{5} \ \: [/tex]
[tex] = \frac{(5 \times 5 +2) }{5} [/tex]
[tex] = \frac{27}{5} \: kg[/tex]
Quantity of sand that escapes in every 10 minutes :-
[tex] = 1 \frac{2}{3} kg[/tex]
Quantity of sand that will escape in 20 minutes :-
[tex] = 1 \frac{2}{3} \times 2 [/tex]
[tex] = \frac{(3 \times 1 + 2)}{3} \times 2[/tex]
[tex] = \frac{5}{3} \times 2[/tex]
[tex] = \frac{10}{3} [/tex]
Quantity of sand that will remain in the sand bag :-
[tex] = \frac{27}{5} - \frac{10}{3} [/tex]
[tex] = \frac{(27 \times 3)}{15} - \frac{(10 \times 5)}{15} [/tex]
[tex] = \frac{81}{15} - \frac{50}{15} [/tex]
[tex] = \frac{31}{15} [/tex]
[tex] = 2 \frac{1}{5} \: kg[/tex]
[tex]therefore \: , \: 2 \frac{1}{5} \: kg \: sand \: is \: left \: in \: the \: bag \: .[/tex]
