After sale in a first week, there were x% items left out of the total stocked items in a store. In next week, when retailer stocked 30% more items and sold 40% more items, the remaining items increased by 20%. Find the value of x.
In the first week, let a retailer had total 100 items, Remaining items=x, so items sold=(100-x)
In next week, new stocked items (+30%) = 130, New Selling (+40%) = 1.4(100-x), Remaining items=130 - 1.4(100-x)
Given, new remaining items are 20% more than the initial ⇒ 130 - 1.4(100-x) = 1.2x
130 - 140 + 1.4x = 1.2x
0.2x = 10
x = 50