
By: Strawberry (offline) Thursday, August 16 2012 @ 09:40 AM CDT (Read 1052 times)



Strawberry 
15. There were 192 apples and pears in a box. John removed 2/5 of the apples from the box and he added 24 pears into the box. As a result, there was an equal number of apples and pears left in the box. How many more apples than pears were there in the box at first?
16.65% of the animals on a farm were cows and the rest were goats. When 240 more cows and goats were added to the farm, the percentage of cows increased by 20% and the number of goats doubled. How many goats were there on the farm at first?

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Registered: 01/31/09 Posts: 83





By: awyw1201 (offline) Friday, August 17 2012 @ 10:25 AM CDT



awyw1201 
Q15
Apples at 1st> 5u
Suppose we add 24 pears and none of the apples were removed, then ratio of A> 5:3
Thus, 8u> 192 + 24 = 216
1u> 27
No. of pears at 1st > 27 x 3  24 = 57
No. of apples at 1st > 192  57 = 135
Diff > 135  57 = 78
Ans : 78
Q16
Ratio of C:G> 65u: 35u
When 240 cows and goats were added,
% of cows increased by 20%> 65u x 120% = 78u
goats doubles > 35u x 2 = 70u
Thus, (78u + 70u)  100u = 48u > 240
35u> 240/48 x 35 = 175
Ans: 175

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Registered: 07/08/11 Posts: 87





By: Strawberry (offline) Friday, August 17 2012 @ 12:09 PM CDT



Strawberry 
Thanks ... need more clarification on 16. how did you get 78u

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Registered: 01/31/09 Posts: 83





By: Strawberry (offline) Friday, August 17 2012 @ 12:11 PM CDT



Strawberry 
ok... i found it ... using 20% of 65 will get 13.. so 65 + 13

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Registered: 01/31/09 Posts: 83



