Question

Tina has only rupees to end up is 5.2 numbers if in all she has used 80 coins in her purse amounting to rupees 232, find the number of rupees 5 coins​

Answer 1

Step-by-step explanation:

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let x be the no. of rs 2 coins and y be the no. of rs 5 coins.

thus, x+y=80. ..,..(1). ( bexause ahe has total 80 coins)

also the amount of all rs 2 coins and allrs 5 coins will be 2x and 5y respectively

thus,total amount =2x+5y

thus,2x+5y=232.......(2)

multiplying eqn(1)by 2 and then aubtraxting eqn (2) from eqn(1),we get

2x+2y=160

-2x-5y=-232

_____________

-3y=--72

y=24

no.of rs 5 coins are 24

Answer 2

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Let the Number of 2 - Rupee coins in Tina Purse be : T

Let the Number of 5 - Rupee coins in Tina Purse be : F

Given that the Total Number of Coins in her Purse as : 80

⇒ T + F = 80

⇒ T = 80 - F

Given that these 80 Coins amount as : 232 rupees.

⇒ (2 × T) + (5 × F) = 232

But, we know that T = 80 - F

⇒ 2(80 - F) + 5F = 232

⇒ 160 - 2F + 5F = 232

⇒ 3F = 232 - 160

⇒ F = 72/3 = 24

⇒ The Number of 5 - Rupee coins = 24

$<marquee><font color= ''red''>$Hope it helps you mark as brainliest please