Question

Sam's mother bought a fish and 2 kg of prawns for $38.50 The fish cost $3.70 more than 1 kg of prawns Find the cost of 1 kg of prawns​

Answer 1

Answer:

$17.40 is the answer.

Step-by-step explanation:

let cost of 2kg prawns=x

let cost of fish=x/2+3.70

therefore x+x/2+3.70=38.50

x+x/2=38.50-3.70

x+x/2=34.80

2x/2=34.80

2x=34.80*2

2x=69.60

x=69.60/2

x=$34.80 per 2 kgs

per 1 kg 34.80/2=$17.40.

Thank you.

Answer 2

Question:-

Sam's mother bought a fish and 2 kg of prawns for 38.50. The fish cost 3.70 more than 1 kg of prawns. Find the cost of 1 kg of fish.

Answer:-

Price of fish = $14.1

Given that:-

• The price of 2 kg prawns is $38.50

• The 2 kg fish costs $3.70 more than 1 kg of the prawns.

To find:-

• The price of 1 kg prawns.

Solution:-

We are given a clue that "The fish cost $3.70 more than 1 kg of prawns".

Which means if we subtract $3.70 from 2 kg price, we will easily get the required result.

Indirectly, we get:-

Let the price of fish be x.

However, we can use Unitary method to find the cost of the prawns.

2kg of prawns give $38.50

So, 1 kg gives$\frac{38.5}{3.7}$

So, $ 10.405 is the cost of 1 kg prawn.

Now, the clue is going to be used.

So, $ 3.7 + $ 10.40 = x

Price of fish = $14.1

So, the price of fish is $14.1 . Hence the required answer.

$Hope\:\:This\:\:Will\:\:Help\:\:You\:\: :)$