Question

5 pen and 3 notebooks costs 39 rupees . if 1 pwn cost 7 rupees ., how much rupees you have to pay for 5 pens and 5 notebooks​

Answer 1

Answer:

Here we have ,

5 pens + 3 notebooks = 89 rupees

1 pen = 7 rupees

So, 5×7= 35 .

Now let's price of one notebook = X

Hence, (5×7)+(3×X)= 89

= 35 + 3X =89

= 3X = 89-35

= 3X = 54

= X = 54/3 or (54 ÷ 3)

= X = 18

So price of one notebook , X = 18

Price of 5 notebooks = 5×18 = 90.

Price of 5 pens = 5 × 7 = 35

Hope it'll help.