Answer
Verified
421.8k+ views
Hint: Assume the number of pineapples and watermelons bought to be x & y respectively. Hence, form a linear equation using the given data and solve for them.
Complete step-by-step answer:
Given, cost of a watermelon = Rs. 5.
Cost of a pineapple = Rs. 7.
Total money spent on fruits = Rs. 38.
Let us assume the number of pineapples purchased to be x.
Then, money spent on pineapples is the cost of one pineapple x number of pineapples purchased.
$\Rightarrow $Money spent on pineapples = Rs. 7x
Let us assume the number of watermelons purchased to be y.
Then, money spent on watermelons is the cost of one watermelon times the number of watermelons purchased.
$\Rightarrow $Money spent on watermelon = Rs. 5y
Total money spent = money spent on (watermelons + pineapples)
$\Rightarrow $38 = 7x + 5y.
From the data given, we have two variables but one equation. Therefore, we cannot find a number of pineapples.
Answer is (D) data inadequate.
Note: To solve linear equations of n variables, we need n equations.
Complete step-by-step answer:
Given, cost of a watermelon = Rs. 5.
Cost of a pineapple = Rs. 7.
Total money spent on fruits = Rs. 38.
Let us assume the number of pineapples purchased to be x.
Then, money spent on pineapples is the cost of one pineapple x number of pineapples purchased.
$\Rightarrow $Money spent on pineapples = Rs. 7x
Let us assume the number of watermelons purchased to be y.
Then, money spent on watermelons is the cost of one watermelon times the number of watermelons purchased.
$\Rightarrow $Money spent on watermelon = Rs. 5y
Total money spent = money spent on (watermelons + pineapples)
$\Rightarrow $38 = 7x + 5y.
From the data given, we have two variables but one equation. Therefore, we cannot find a number of pineapples.
Answer is (D) data inadequate.
Note: To solve linear equations of n variables, we need n equations.
Recently Updated Pages
The branch of science which deals with nature and natural class 10 physics CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Define absolute refractive index of a medium
Find out what do the algal bloom and redtides sign class 10 biology CBSE
Prove that the function fleft x right xn is continuous class 12 maths CBSE
Find the values of other five trigonometric functions class 10 maths CBSE
Trending doubts
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Summary of the poem Where the Mind is Without Fear class 8 english CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Write an application to the principal requesting five class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
What is the z value for a 90 95 and 99 percent confidence class 11 maths CBSE