Answer :
an unknown number = n
.....................................
89 + n = 94
62
n = 94 - 89
62
n = 5
62
Cross multiply
n = 62 * 5
n = 310
.....................................
89 + n = 94
62
n = 94 - 89
62
n = 5
62
Cross multiply
n = 62 * 5
n = 310
