Quadrilateral: Constructions and Types — Maths STD 8 — Question

The following table shows the sales of a commodity during the years 2000 to 2006.

Years:	2000	2001	2002	2003	2004	2005	2006
Sales (in lakhs of Rs):	1.5	1.8	2.4	3.2	5.4	7.8	8.6

Draw a graph of this information.

Write the cubes of all natural numbers between 1 and 10 and verify the following statements:

1. Cubes of all odd natural numbers are odd.
2. Cubes of all even natural numbers are even.

Vinod sold a watch to Arun at a gain of 12% and Arun had to sell it to Manoj at a loss of 5%. If manoj paid Rs. 3990 for it, how much did vinod pay for the watch?

A society collected Rs. 92.16. Each member collected as many paise as there were members. How many members were there and how much did each contribute?

Ravish sold his motorcycle to Vineet at a loss of 28%. Vineet spent Rs. 1680 on its repairs and sold the motor cycle to to Rahul for Rs. 35910, thereby making a profit of 12.5%, find the cost price of the motor cycle for Ravish.

If the rate of notebooks is Rs 240 per dozen, what is the cost of 3 notebooks ? Also find the cost of notebooks, 24 notebooks and 50 notebooks and complete the following table.

Number of notebooks (x)	12	3	9	24	50	1
Cost (In Rupees) (y)	240	__	__	__	__	2

The monthly income of family is ₹ 28800. The monthly expenditure of the family on various items is given below.

Item	Rent	Food	Clothing	Education	Saving
Expenditure (in ₹)	8000	10800	5600	3600	800

Represent the above data by a pie chart.

The ratio of the weights of copper and zinc in brass is 13:7. Find the weight of zinc in a brass utensil weighing 700 gm.