maths question

2012-11-28 3:04 am
A supermarket sells two sizes of peanut oil,normal size and jumbo size. The volume of normal-sized peanut oil is 40% less than that of jumbo -sized peanut oil and their difference in volume is 600ml.
a)find the volume of normal-sized peanut oil.
b)if the volume of normal-sized peanut oil is increased by 5%, find its new volume.

回答 (1)

2012-11-28 3:15 am
✔ 最佳答案
a) Let x ml be the volume of jumbo-sized peanut oil.
x-x*(1-40%)=600
x-0.6x=600
0.4x=600
x=1500
the volume of normal-sized peanut oil=1500-600=900ml

b) its new volume,
900 x (1+5%)
=945ml
參考: me


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