要完整列式1.If $7800 is shared among 3 persons A,B,C in the ratio 1/4:_英语解答

要完整列式
1.If $7800 is shared among 3 persons A,B,C in the ratio 1/4:1/2:1/3 If persons A receives the smallest share,what is the amount that person A get?
2.x+6/10:x/6:6/y.Find the values of x and y
3.The figure shows the Pathenon in Athens with a scale of 1cm:6m .The length and height of the Pathenon in the figure is 5.8cm and 3.6 cm.
a)Calculate its actual length and height,express your answer in m.
b)If the ratio of its actual length to its actual height is n:1,find the value of n,correct answer to 3 significant figures.

人气：432 ℃　时间：2020-09-10 06:47:03

解答

1.
1/4 < 1/3 < 1/2
A receives 7800*(1/4)/(1/4 + 1/2 + 1/3) = 7800*(1/4)/(13/12) = 7800*(1/4)(12/13) = 7800*3/13 = 1800
2.
There're errors in this question.It has to have "=" somewhere.
3.
a)
At the scale of1cm:6m, the length is 5.8*6 = 34.8m; the height is 3.6*6 = 21.6 m
b)
n : 1 = 5.8 : 3.6
n = 1*5.8/3.6 = 1.61Q2) In the diagram, polygons ABCDE and PQRST are two similar figures. Find the values of xand y.ABCDE AB: x+6,BC: not provide,CD: not provide,DE:x,AE: 6PQRSTPQ:10,QR:not provide,RS:not provide,ST:6,PT:yIn this case:AB = x + 6, DE = x, AE = 6PQ = 10, ST = 6, PT = yx + 6 : 10 = x : 6 = 6 : yFrom x+6 : 10 = x : 6, x = 99 : 6 = 6 : yy = 4