if a light flashes every 6 seconds , how many times will it flash in 1 / 5 of an hour ?
"in 1 / 5 of an hour there are 12 * 60 = 720 seconds the number of 6 - second intervals = 720 / 6 = 120 after the first flash , there will be 120 more flashes for a total of 121 . the answer is c ."
divide(multiply(divide(const_3600, const_4), const_3), 6)