Thanks so much.
tianzhu:Hirsorchid:Pls help, Thanks.
A florist had some roses, tulips and carnations. After selling some of them, there were 6 tulips for every 5 roses and 7 roses for every 3 carnations. After selling 168 roses, she had 456 tulips and carnations left. The number of tulips sold was the same as the number of carnations sold.
a) How many roses had she at first?
b) If the number of tulips was twice the number of carnations at first, what is the total number of tulips and carnations sold?
A neat way is to use MD.
T:R ------ 6:5 -------42:35
R:C ------ 7:3 -------- 35:15
Since the share for roses is repeated, make it the same for both set of ratios
15 + 42 ------ 57
57 units -------- 456
1 unit ------- 8
(a)Number of roses left ------- 35*8 -------- 280
Number of roses@first -------- 280+168 -------- 448
(b) Draw 1 box to show number of tulips/carnation sold.
Number of tulips left ------- 42*8 -------- 336
Number of carnations left -------- 120
1 box + 336 ------- 1 box + 120 = 1 box + 120
1 box ------- 96
The total number of tulips and carnations sold ------- 96*2 ------- 192
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