1.(a) I added 18 to 3 times a number, the result is equal to 5 times the number. What is the number?

(b) The formula P = 9d + 320 is the cost of buying an article "P" while "d" is the number of articles bought.
If P = N797.00, find. the number of articles.

2. D is partly constant and partly varies with V. When V 40, D = 150 and when V = 54, D = 192.
i) Find the formula connecting D and V.
(ii) Find D when V= 73.

3.(a) A cylindrical tank for storing oil has a capacity of 1078 cm³. If its height and radius are equal, calculate the depth of oil in the tank when full (Take π= 22/7)

(b) Find the perimeter of a rectangular field which is 10m by 5m.

4.Solve the equation:
X-4-2/5=-X/2