3.The sum of three consecutive even numbers is 186. Find the numbers.4

1.	3.The sum of three consecutive even numbers is 186. Find the numbers.4. The cost of 3 pens and a notebook is 72. Ifthe cost of notebook is18, find the cost of one pen.
Answer» Cost of pen is x and notebook is y.3x+y=72y=183x=72-183x=54x=18.So, cost of one pen is 18. the cost of 3pens and a notebook is = 72the cost of notebook is = 18now, we will subtract (72 - 18). we get 54, which is the cost of 3 pen cost of 3 pen = 54. (above mention)cost of one pen = 54 ÷ 3 = 18.The cost of one pen is Rs 18.

3.The sum of three consecutive even numbers is 186. Find the numbers.4. The cost of 3 pens and a notebook is 72. Ifthe cost of notebook is18, find the cost of one pen.

Answer»

Cost of pen is x and notebook is y.3x+y=72y=183x=72-183x=54x=18.So, cost of one pen is 18.

the cost of 3pens and a notebook is = 72the cost of notebook is = 18now, we will subtract (72 - 18). we get 54, which is the cost of 3 pen

cost of 3 pen = 54. (above mention)cost of one pen = 54 ÷ 3 = 18.The cost of one pen is Rs 18.