Question

vanishka has 3 times as many two rupee coin as she has 5 rupee coins if she has in all a sum of 77 rupees how many coins she has in each denomination​

Answer 1

Number of 2 rupees coins = 21 and number of 5 rupees coins = 7

Solution:

Let us take number of 5 rupees coins as X and number of 2 rupees coins as Y

Amount of 5 rupees coin will make = 5X

Amount of 2 rupees coin will make = 3Y

Number of 2 rupees coin = 3×5 rupees

Number of 2 rupees coins are equal to 3X and number of 5 rupees is X

Total amount = 2( 3X ) + 5X = 11X

Now we can equate the amount which 11X = 77

X = 7

Now as we know the number of 2 rupees coin is 3X and number of 5 rupees coin is X, that means

Number of 2 rupees coins = 21 and number of 5 rupees coins = 7

Answer 2

Vanshika has 3 times as many ₹2 coins as she has ₹5 coins.If she has in all a sum of ₹77

According to question-

let the number of ₹5 be x

number of ₹2 be 3x

Given sum of both coins is 77

Therefore,

➜ 5×(x)+2×(3x)=77

➜ 5x+6x =77

➜ 11x=77

➜ x=77/11

➜ x=7

Hence,

• Number of ₹5 coins, x=7
• Number of ₹2 coins,3x=3×7=21

:• She has 7 coins of ₹5 and 21 coins of ₹2.