x is 30% larger than y,y is 30% less than 300.the value for x-y is( )

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x is 30% larger than y,y is 30% less than 300.the value for x-y is( )
x is 30% larger than y,y is 30% less than 300.the value for x-y is( )

x is 30% larger than y,y is 30% less than 300.the value for x-y is( )
由 y is 30% less than 300(y比300少30%),得
y = 300×(1-30%) = 210
由 x is 30% larger than y(x比y大30%),得
x = (1+30%) y = (1+30%)×210 = 273
所以 x-y = 273-210 = 63
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