问题标题:
SSAT数学题:whatwillcosttotileakitchenfloorthatis12feetwideby20feetlongif.whatwillcosttotileakitchenfloorthatis12feetwideby20feetlongifthetilecost$8.91persquareyard?yard貌似是码的意思,估计有单
问题描述:
SSAT数学题:whatwillcosttotileakitchenfloorthatis12feetwideby20feetlongif.
whatwillcosttotileakitchenfloorthatis12feetwideby20feetlongifthetilecost$8.91persquareyard?
yard貌似是码的意思,估计有单位换算的说.
贾永平回答:
3feet=1yard
解法:
12feet=4yard
20feet=20/3yard
地板的面积=4*20/3=80/3
cost=面积*单价=80/3*8.91=237.60
答案选择b
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