maths

8Y+3Y=29.1 Y=

11Y = 29.1
Y = 29.1 / 11
= 2.6455

梨每個售1.5元,orange每個售1.2元,以買兩打梨的錢改買orange,可買orange多少個

1.5 X 24 / 1.2 = 30

13份之5除15份之6乘2又5份之3=

5/13 除 6/15 x 2又3/5
= 5/13 x 15/6 x 13/5
= 15/6
= 2又 1/2

4300立方cm的water容量是多少L?
1 L = 1000立方cm
4300 / 1000 = 4.3 L

5Lwater注入長50cm,高20cm,闊30cm的水箱後水位會升高多少cm?(份數列式)
5000 / ( 30 X 50) = 3.33 CM

8Y+3Y=29.1 12Y=29.1 then Y=2.425
梨每個售1.5元,orange每個售1.2元,以買兩打梨的錢改買orange,可買orange多少個?
兩打梨= 1.5x24 =36
Orange = 36/1.2 = 30
13份之5除15份之6乘2又5份之3=5/13x15/6x13/5=2.5
4300立方cm的water容量是多少L? 4.3L
5Lwater注入長50cm,高20cm,闊30cm的水箱後水位會升高多少cm?
Total volume 水箱= 30L
5L = 1/6 of 30L.
水位會升高 = 20cm/6=3 1/3 cm