shruti has only rupees 2 and rupees 5 coins with her.If the total number of coins is 25 and the amount of money is rupees 92 then the number of rupees 2and rupees 5 coins are respectively
Answers
Given: Shruti has only rupees 2 and rupees 5 coins with her.
The total number of coins is 25 and the amount of money is rupees 92
To Find: The number of rupees 2 and rupees 5 coins are respectively
Solution:
The number of rupees 2 coins = x
total number of coins is 25
=> The number of rupees 5 coins = 25 - x
Value of x coins of rupees 2 = 2x Rs
Value of 25 - x coins of rupees 5 = 5(25 - x) = 125 - 5x Rs
Total Value = 2x + 125 - 5x = 125x - 3x Rs
Total Value is given = Rs 92
Equate total Value
=> 92 = 125 - 3x
=> 3x = 33
=> x = 11
25 - x = 14
The number of rupees 2 coins = 11
The number of rupees 5 coins = 14
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Step-by-step explanation:
Let no. be x,
The number of rupees 2 coins = x
total number of coins is 25
=> The number of rupees 5 coins = 25 - x
Value of x coins of rupees 2 = 2x Rs
Value of 25 -x coins of rupees 5 = 5(25 - x) = 125 - 5x Rs
Total Value = 2x + 125 - 5x = 125x - 3x Rs.
Total Value is given = Rs 92
Equate total Value
=> 92 125 - 3x
=> 3x = 33
=> x = 11
25 - x = 14
The number of rupees 2 coins = 11.
The number of rupees 5 coins = 14.