seller selling an apple for rs . 15 , a seller loses 1 / 6 th of what it costs him . the cp of the apple is ?
"sp = 15 loss = cp 16 loss = cp − sp = cp − 15 ⇒ cp 16 = cp − 15 ⇒ 15 cp 16 = 15 ⇒ cp 16 = 1 ⇒ cp = 16 c"
add(15, 1)