A tank of water in the shape of a cone is leaking at a constant rate of 5m^3/hour. The base radius of the tank is 7m and height of the tank is 16m. How fast is the depth of the water decreasing when the depth of the water is 5m ?

$35.59 in pounds

step-by-step explanation:

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.

the correct answer is c