tough question on ratio and proportion

syncopation_music SG

My pri 5 student stunned me with this question

if Amy:Daniel ratio for bouquets of flower is 4:5 and Daniel and Alice is 6:8

how would you express in the ratio Amy:Daniel :Alice

please help :)

thanks

baiyun SG

Amy:Daniel: Alice

4 5

6 8

24 30

30 40

12 15 20

dibilo SG

if you wan you can draw models but i am lazy.. i'll just tell you the steps

Amy: 4 units

D: 5 units

________________________

D:6 units

Alice: 8units

Comparing D on top and below, we know the LCM (lowest common multiple) is 30 therefore for the 5 units on top for D, you need to divide each unit into 6 parts to get 30. For Amy, you'll also need to divide each part into 6 = 24 parts

For the D at the bottom, to get 30, you'll need to divide each unit by 5. for each of Alice's 8 units, divide them into 5 parts also and u'll get 40 units

therefore the ratio is 24:30:40, in simplest form = 12:15:20

MyPillowTalks SG

if Amy:Daniel ratio for bouquets of flower is 4:5 and Daniel and Alice is 6:8

how would you express in the ratio Amy:Daniel :Alice

Amy:Daniel:Alice
4:5:------------must x 6 to get 30, so that line all x 6
:6:8----------must x 5 to get 30, so that line all x5

The common thing here is 6 and 5, which is the comparison of daniel and alice

6x5=30(LCM)

so multiply the 4 by 6, and 8 by 5 on the 1st and 2nd line respectively

so,

4(6):5(6):
:6(5):8(5)
-----------------------
24:30:40
------------------

i tink need to be in simplest form, thus, divde 2 throughout, 12:15:20

weewee SG

I think you need to read up more on primary school questions. This is just a medium level primary school question.

SBS 9613Z SG

My pri 5 student stunned me with this question

if Amy:Daniel ratio for bouquets of flower is 4:5 and Daniel and Alice is 6:8

how would you express in the ratio Amy:Daniel :Alice

please help :)

thanks

do you give tuition or what? this question is really really basic.

Darkness_hacker99 SG

I still remember this. ;)