Question

If the weight of 13 pens and 65 erasers is 1 Kg 885 grams, then the weight of 2 such pens and 10 erasers is​

Answer 1

Answer:

Let the weight of pen be denoted as p and weight of eraser be e

If the weight of 13 pens and 65 erasers is 1885,

13p + 65e = 1885

13 (1p + 5e) = 1885

1p + 5e = 1885/13

1p + 5e = 145…Eq..1

what is the weight of 2 pens and 10 such erasers

Let the weight of 2 pen and 10 erasers be x

2p + 10e = x

2 (1p + 5e) = x. Eq..2

Substituting the value of (1p + 5e) from Eq…1

2 (145) = x

x = 290

Thus the weight of 2 pen and 10 erasers is 290

Step-by-step explanation: