
Please help to solve. Thanks.
Please help to solve. Thanks.
As same amount (56l) of juices were sold, the difference remain unchanged.
Before: S : P Difference
9u : 5u 4u
Change: -56l : -56l 0
After: 5p : 2p 3p
Since difference unchanged, 4u = 3p (diff). Make them the same by changing to common multiple (i.e. 12)
Before: S : P Difference
9ux3 : 5ux3 4ux3
27 15 12
Change: -56l : -56l 0
After: 5px4 : 2px4 3px4
20 8 12
Hence, 27-20=7u (for S).
7u = 56l
1u = 8l
27u = 216l (Answer)
Thanks for the help.
S:P : D S:P: D
9:5 :4 5:2:3
27:15:12 20:8:12
12u-> 56l
1u->56÷12=14/3
27u->14/3 x 27=126
I don’t know if this is correct but this is my way of doing it 🙂
So sorry… it is wrong. The model answer provided by SavingPrivateTutor is correct.
I know it’s hard to think in terms of models, but the difficulty falls with every problem you attempt. Please keep at it!
Sorry I only know how to solve this by algebra…
Let S=Number of strawberries at the beginning
Let P=Number of pears at the beginning
So, S/P = 9/5
=> (1) P = 5/9S
Also after selling,
(S-56)/(P-56) =5/2
=> 2S – 112 =5P – 280
=> (2) 2S -5P = -168
Sub (1) into (2),
2S – 5(5/9)S = -168
-7/9S = -168
=> S = 168 * 9/7 = 216 #