Quantify of sand in a bag =
Quantity of sand that escapes in every 10 minutes :-
Quantity of sand that will escape in 20 minutes :-
Quantity of sand that will remain in the sand bag :-
The answer is 12/100. This is because the 12 is a 100 decimal place.
Product means multiply, a number means any variable so 6x is the answer
This construction called a pencil of lines. That figure can have 3,4,5.... any number of straights lines. The main rule is their common point. And it looks like spokes of a wheel. Here you can find a lot of vertical angles and rays.
