Correct Answer - Option 4 : ₹ 15,000, ₹ 10,000, ₹ 25,000
Given:
Cost of 2 mobiles and 4 tablets is 70,000
Cost of 2 tablets, 3 mobiles and 1 laptop is 90,000
Cost of 1 laptop = Cost of 1 mobile + Cost of a tablet
Calculation:
Let the cost of mobile be x
Cost of tablet be y
Cost of laptop = x + y
According to question,
2x + 4y = ₹ 70,000 ---(i)
3x + 2y + (x + y) = ₹90,000
⇒ 4x + 3y = ₹90,000 ---(ii)
Solving eqn. (i) and (ii)
Cost of mobile (x) = ₹ 15,000
Cost of tablet (y) = ₹ 10,000
Cost of laptop (x + y) = ₹ 25,000
∴ The cost of a mobile, a tablet and a laptop is ₹ 15,000, ₹ 10,000 and ₹ 25,000 respectively.