Question

Diketahiu harga sepasang sepatu 2 kali harga sepasang sandal.srorang pedagang membeli 4 pasang sepatu dan 3 pasang sandal.pedagang tsb harus membayar Rp.275.000 .tentukan harga 3 pasang sepatu dan 5 pasang sandal..

Answer 1

A = sepatu
b = sandal

a = 2b
4a + 3b =275000
8b + 3b =275000
11b = 275000
b = 25000
a = 50000

3a + 5b = 150000 + 125000
= 275000

Answer 2

Sepatu = x, sandal = y

x = 2y
4x + 3y = 275000

maka 3x + 5y =...

4.(2y) + 3y = 275000
11 y = 275.000 ---> y = 25.000
x = 2.(25000) = 50.000

maka 3.(50000) + 5.(25000)= 150000 + 125000 = 275000