Question Text
Question 21 :
2x + 39 is an example of single variable expression. Is it TRUE or FALSE ?
Question 22 :
The ages of Hari and Harry are in the ratio 5:7. Four years from now the ratio of their ages will be 3:4. Find Harry's present age.
Question 23 :
What is the length of a rectangle if its perimeter and width are 13cm and $2\frac{3}{4}$ cm rspectively?
Question 25 :
An algebraic equation is an equality involving variables. It says that the value of the expression on one side of the equality sign is equal to the value of the expression on the other side.Is it TRUE or FALSE?
Question 26 :
Present ages of Anu and Raj are in the ratio 4:5. Eight years from now the ratio of their ages will be 5:6. Find Anu's present age.
Question 28 :
Fifteen years from now Ravi’s age will be four times his present age. What is Ravi’s present age?
Question 31 :
Baichung’s father is 26 years younger than Baichung’s grandfather and 29 years older than Baichung. The sum of the ages of all the three is 135 years. What is the age of Baichung's father?
Question 32 :
Arjun is twice as old as Shriya. Five years ago his age was three times Shriya’s age. Find the present age of Shriya.
Question 35 :
Three consecutive integers add up to 51. What are these integers?
Question 36 :
Three consecutive integers are such that when they are taken in increasing order and multiplied by 2, 3 and 4 respectively, they add up to 74. Find these numbers.
Question 37 :
A grandfather is ten times older than his granddaughter. He is also 54 years older than her. Find granddaughter's age.
Question 39 :
The sum of three consecutive multiples of 8 is 888. Find the multiples.
Question 40 :
Hasan buys two kinds of cloth materials for school uniforms, shirt material that costs him Rs.50 per metre and trouser material that costs him Rs.90 per metre.For every 3 meters of the shirt material he buys 2 metres of the trouser material. He sells the materials at 12% and 10% profit respectively. His total sale is Rs. 36,600.How much trouser material did he buy?