did some calculations.....assuming we can get 15% off without the promotion....
let x be full price of watch 1
let y be full price of watch 2 (cheaper one)
in order for the ocbc discounts to be worth it....
0.85x + 0.85y > x + 0.5y
solving,
y > 0.43x
in other words, the full price of the cheaper watch must be at least 43% of the more expensive watch
let x be full price of watch 1
let y be full price of watch 2 (cheaper one)
in order for the ocbc discounts to be worth it....
0.85x + 0.85y > x + 0.5y
solving,
y > 0.43x
in other words, the full price of the cheaper watch must be at least 43% of the more expensive watch
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