[計量] PP-T1-DS-214
The cost of a square slab is proportional to its thickness and also
proportional to the square of its length. What is the cost of a square slab
that is 3 meters long and 0.1 meter thick?
(1) The cost of a square slab that is 2 meters long and 0.2 meter thick is
$160 more than the cost of a square slab that is 2 meters long and 0.1 meter
thick.
(2) The cost of a square slab that is 3 meters long and 0.1 meter thick is
$200 more than the cost of a square slab that is 2 meters long and 0.1 meter
thick.
嗯! 其實我是看不太懂題目的意思
請大家幫我解答 謝謝^^
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