Question

Jaya went to buy 5 kg of salt. She got two 3/4-kg packets of
salt. The rest of the salt she bought in 1/2-kg packets. How
many 1/2-kg packets did she buy?​

Answer 1

Answer:

7 packets

Step-by-step explanation:

Let x be considered as the number of 1/2-kg packets

Total amount of salt: 5kg

Number of 3/4-kg packets: 2

Number of 1/2-kg packets: x

2(3/4)+x(1/2)= 5

6/4+1x/2= 5

3/2+x/2= 5

(3+x)/2= 5

3+x= 5*2

3+x= 10

x= 10-3

x= 7

Check

2(3/4)+x(1/2)= 5

2(3/4)+7(1/2)= 5

6/4+7/2= 5

3/2+7/2= 5

10/2= 5

5=5

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Answer 2

Answer:

7 packets

Step-by-step explanation:

Total amount of salt: 5kg

Number of 3/4-kg packets: 2

Number of 1/2-kg packets: x

2(3/4)+x(1/2)= 5

6/4+1x/2= 5

3/2+x/2= 5

(3+x)/2= 5

3+x= 5*2

3+x= 10

x= 10-3

x= 7

Check

2(3/4)+x(1/2)= 5

2(3/4)+7(1/2)= 5

6/4+7/2= 5

3/2+7/2= 5

10/2= 5

5=5