Animesh bought 10 pencils and 7 erasers and the total amount he paid was rupees 120. Choose the equation that represents the transaction correctly.
(Assume the price of a pencil to be ₹ $x$ and of an eraser to be ₹ $y$ )

10 x + 7 y = 120

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

10 x - 7 y = 120

No worries! We‘ve got your back. Try BYJU‘S free classes today!

5 x + 3 y = 40

No worries! We‘ve got your back. Try BYJU‘S free classes today!

7 x + 10 y = 120

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A $10 x + 7 y = 120$
Total number of pencils $= 10$
Price of one pencil $= x$
So, total price of 10 pencils
= Total number of pencils $\times$ price of one pencil
$= 10 x$

Total number of erasers $= 7$
Price of one eraser $= y$
So, total price of 7 pencils
= Total number of erasers $\times$ price of one eraser
$= 7 y$

Total amound paid = 120
$\Rightarrow$ Total price of 10 pencils + Total price of 7 pencils = 120
$\Rightarrow 10 x + 7 y = 120$

Therefore, required equation is
$10 x + 7 y = 120$

Suggest Corrections

Similar questions

If the cost of a pencil is ₹ $(x + 5)$ and that of an eraser is ₹ $x$ , then how do we represent the statement:
"The total cost of 5 pencils and 10 erasers is ₹ 100" in the form of a linear equation in $x$ ?

Q. I bought 5 pens, 7 pencils and 4 erasers. Rajan bought 6 pens, 8 erasers and 14 pencils for an amount which was half more what I had paid. What percent of the total amount paid by me was paid for the pens?

Q. I bought 5 pens, 7 pencils and 4 erasers Rajan bought 6 pens, 8 erasers and 14 pencils for an amount which was half more what I had paid What percent of the total amount paid by me was paid for the pens?

Find the equation of tangent at $(- \frac{3}{2}, \frac{2}{2})$ to the ellipse

$7 x^{2} + 7 y^{2} + 2 x y + 10 x - 10 y + 7 = 0$

Q. Do the equations 5x+7y=8 and 10x+14y=4 represent a pair of concident lines ? Justify your answer.

Join BYJU'S Learning Program

Animesh bought 10 pencils and 7 erasers and the total amount he paid was rupees 120. Choose the equation that represents the transaction correctly. (Assume the price of a pencil to be ₹ x and of an eraser to be ₹ y)

Animesh bought 10 pencils and 7 erasers and the total amount he paid was rupees 120. Choose the equation that represents the transaction correctly.
(Assume the price of a pencil to be ₹ $x$ and of an eraser to be ₹ $y$ )