Statement sum Involving Quadratic Equations:
Step 1: Translate the word problem into methamatical statement.
Step 2: Then form a Quadratic Equation.
Step 3: Solve the Quadratic Equation.
Step 4: Reject the root that satisfy the conditions of the problem.
Example: The Sum of two numbers is 18 and their product is 45. Find the numbers.
Solution: Let one number = y
Other number = 18- y
According to the question:
Product = 45
y X (18-y) = 45
y= 15 , 3
So One number is 15 and the other number is 3
A number is multiplied by times itself and 18 is added to the result. If the final result is 2901, the number is _________________ | |||
Right Option : B | |||
View Explanation |
A group of stuydents decided to buy a tape recorder from 170 to 195 ruppes.But at the last moment two students backed out of the decision so that the remaining students had to pay 1 rupee more than they had planned, The price of the tape recorder if each student paid equal shares is: | |||
Right Option : B | |||
View Explanation |
One side of a rectangle is 3 ft shorter than twice the other side. Find the sides if the perimeter is 24 ft. | |||
Right Option : A | |||
View Explanation |
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