Correct Answer - Option 3 : Rs. 45,000
Given:
The cost of 2 mobiles and 3 tablets is Rs. 54,000
The cost of 1 mobile and 2 tablets is Rs. 33,000
Calculation:
Let cost of 1 mobile be Rs. x and and cost of 1 tablet be Rs. y.
According to the question,
2x + 3y = 54,000 ----(1)
And
x + 2y = 33,000 ----(2)
By multiplying equation (2) by 2
2 × (x + 2y = 33,000)
⇒ 2x + 4y = 66,000 ----(3)
Subtracting equation (1) from equation (3),
⇒ y = 12,000
Putting the value of y in equation (1) we
⇒ x = 9,000
∴ cost of 5 mobiles is 5x = 5 × 9,000 = Rs. 45,000