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Question

Hi! Can help us with this qn? Is the answer (a) decrease

b) 60%

________

In Miriam’s aquarium, there are sword tails and guppies. 25% of the fishes are sword tails. She then buys an equal number of swordtails  and put them in the aquarium. 

a) Will the percentage of fishes in the aquarium which are guppies increase, decrease or remain the same?

 

b) What percentage of the fishes will be guppies?

Answer

Yes, the answers are (a) decrease and (b) 60% and my solution is as follows :

(a)
swordtail : guppies : total
25 units (25%) : 75 units (75%) : 100 units (100%
After buying an equal number of swordtails,
swordtail : guppies : total
50 units (40%) : 75 units (60%) : 225 units (100%)
The percentage of fishes in the aquarium which are guppies will decrease.

(b)
60% percentage of the fishes will be guppies.

Ans : (a) decrease; (b) 60%.

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Yes!

You are correct!

.

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