Respuesta :
11 + 19x = 49
19x = 49 - 11
19x = 38
x = 38/19
x = 2 <== 2 products are being purchased
because she picked out 2 products...which took (19 * 2) = 38 seconds....and then it took another 11 seconds at the checkout....so thats a total of (38 + 11) = 49 seconds
19x = 49 - 11
19x = 38
x = 38/19
x = 2 <== 2 products are being purchased
because she picked out 2 products...which took (19 * 2) = 38 seconds....and then it took another 11 seconds at the checkout....so thats a total of (38 + 11) = 49 seconds