if â € œ * â €  is called â € œ + â €  , â € œ / â €  is called â € œ * â €  , â € œ - â €  is called â € œ / â €  , â € œ + â €  is called â € œ - â €  . 80 / 40 â € “ 10 * 20 + 10 = ?
"explanation : given : 80 / 40 â € “ 10 * 20 + 10 = ? substituting the coded symbols for mathematical operations , we get , 80 * 40 / 20 + 20 â € “ 10 = ? 80 * 2 + 20 â € “ 10 = ? 160 + 20 â € “ 10 = ? 180 â € “ 10 = 170 answer : c"
add(multiply(divide(10, 20), divide(80, 40)), 10)