Question

0.2x+0.3y=1.3 0.4x+0.5y=2.3 by cross multiplication​

Answer 1

Answer:

Step-by-step explanation:

0.1x+0.15y=0.65  ___(3)

0.12x+0.15=0.69 _____(4)

on subtraction (ghatane par)

0.02x+=0.04

x=0.04/0.02=2

on putting the value of x in equation (3)

(samikaran 3 me x ka maan rakhne par)

0.1x+0.15y=0.65

0.1*2+0.15y=0.65

0.2+0.15y=0.65

on cross multiplication (pakshantar kar ne par)

0.15y=0.65-0.2

y=0.45/0.15=3

hence, x=2 and y=3 ans

(atah, x=2 aur y=3 uttar)