A
Grocer sells 40 litres oil for the cost price of 42 litres find his gain or loss percent

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

17.08

correct me if i am wrong.

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

answer:

c) the x-coordinate of the center of the circle increases by 3