Question

Gunjan has only 1 rupee and 2 rupee coins with her. if the total number of coins is 50 and the amount of money with he is 75 rupees, then form a pair of linear equations and solve to find out the number of 1 rupee and 2 rupee coins

Answer 1

Answer:

let no of one rupee coin=x

no of two rupee coin=y

case 1

1x+2y=75

case2

x+y=50

x+2y=75 (substraction)

x+y=50

___________

y=25

sub.y=25in x+2y=75

x+2×25=75

x+50=75

x=75-50

x=25

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Answer 2

There are 25 coins of Re. 1 and 25 coins of Rs. 2.

Step-by-step explanation:

Since we have given that

Total number of coins = 50

Let the number of Re. 1 be 'x'.

Let the number of Rs. 2 be 50-x

Amount earned from Re.1 be x.

Amount earned from Rs.2 be 2(50-x)

Total amount of money = Rs. 75

According to question, we get that

$x+2(50-x)=75\\\\x+100-2x=75\\\\-x=75-100\\\\-x-25\\\\x=25$

So, the number of 1 rupee is 25

The number of 2 rupees is 50-25= 25

Hence, there are 25 coins of Re. 1 and 25 coins of Rs. 2.

# learn more:

Gunjan bought goods worth rupees 7560 and spend some amount for transportation and packing his sold the goods for rupees 9900 and made a profit of 10% what were his overhead expenses

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