a box of chalk and 2 dusters cast rp 16,500,00 3 boxes of chalk and 2 dusters cast rp 25,500,00 find the total of chalk and 1 duster?​

Jawab:

Penjelasan dengan langkah-langkah:

chalk = x

duster= y

x+ 2y= 16.500

3x+ 2y= 25.000

———————   –  (min)

-2x = – 8.500

x= 4.250

chalk= rp 4,250,00

x+2y = 16.500

(4.250) + 2y= 16.500

2y= 16.500 – 4250

2y= 12.250

y= 6.125

duster= rp 6,125,00

chalk+duster= 4,250,00+6,125,00= rp 10, 375,00