Respuesta :
39= 13/10 * b
39= 1.3 *b ( 13 divided by 10= 1.3)
39/ 1.3= b (39 divided by 1.3)
30=b
Answer is 30
39= 1.3 *b ( 13 divided by 10= 1.3)
39/ 1.3= b (39 divided by 1.3)
30=b
Answer is 30