If you subtract from a number and multiply the results by
you get
What is the number?
Let the required number be x.
∴ According to the condition, we have
or (Multiply both sides by 2)
Adding both sides , we have
or
∴ The required number
The perimeter of a rectangular swimming pool is 154 m. Its length is 2 m more than twice its breadth. What are the length and the breadth of the pool?
The base of an isosceles triangle is cm. The perimeter of the triangle is
. What is the length of either of the remaining equal sides?
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.
The ages of Rahul and Haroon are in the ratio 5 : 7. Four years later the sum of their ages will be 56 years. What are their present ages?
The number of boys and girls in a class are in the ratio 7 : 5. The number of boys is 8 more than the number of girls. What is the total class strength?