Question

A laptop cost Rs : 645 more than a printer . 2 such laptops and 3 such printers cost Rs: 2470 altogether. How much does 1 such laptop cost?​

Answer 1

Answer:

let the price of printer be x

therefore, the price of laptop will be x+645

To find - price of printer (x)

Step-by-step explanation:

2*( x+645) + 3x = 2470

2x + 1290 + 3x = 2470

5x + 1290 = 2470

5x = 2470 - 1290

5x = 1180

x = 1180\5

x = 236

therefore, price of printer is rs. 236

Answer 2

Answer:

The cost of 1 laptop is Rs 881.

Step-by-step-explanation:

Let the cost of 1 printer be Rs x.

From the first condition,

Cost of laptop = Cost of printer + 645

⇒ Cost of laptop = x + 645 - - - ( 1 )

From the second condition,

Cost of two laptops + Cost of three printers = 2470

⇒ 2 * ( x + 645 ) + 3x = 2470 - - - [ From ( 1 ) ]

⇒ 2x + 1290 + 3x = 2470

⇒ 2x + 3x + 1290 = 2470

⇒ 5x + 1290 = 2470

⇒ 5x = 2470 - 1290

⇒ 5x = 1180

⇒ x = 1180 ÷ 5

⇒ x = 236

Now,

Cost of 1 laptop = x + 645

⇒ Cost of 1 laptop = 236 + 645

⇒ Cost of 1 laptop = 881

∴ The cost of 1 laptop is Rs 881.