rahil
rahil
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495 The quickest way is probably: Each "number" appears an equal number of times. The average number of dots on a segment is 4.5 (the mid point of 0 to 9), so the average total number of dots is 9 per dominoe. There are 55 dominoes so …
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Let p be the listed price Coupon A saves 0.15*p Coupon B saves 30 Coupon C saves 0.25(p-100) Coupon A saves at least as much as B, so 0.15*p >= 30 which rearranges to p >= 30*100/15 = 200 Coupon A saves at least as much as C, so 0.…
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Let p be the listed price Coupon A saves 0.15*p Coupon B saves 30 Coupon C saves 0.25(p-100) Coupon A saves at least as much as B, so 0.15*p >= 30 which rearranges to p >= 30*100/15 = 200 Coupon A saves at least as much as C, so 0.…