The manager of a snack bar buys bottled water in packs of 35 and candy bars in packs of 20. Then, she sells the items individually. Yesterday, she bought the same number of water bottles as candy bars to sell at the snack bar. If she bought the lowest number of items possible, how many packs of each item did she buy?
35 = 5 * 7
20 = 5 * 4
so find least common multiple
35*4 = 140
20*7 = 140
so 4 water packs and 7 candy bar packs