i have total of 300 RS in coins of denomination Rs1 Rs2 and Rs5 the nu

1.	i have total of 300 RS in coins of denomination Rs1 Rs2 and Rs5 the number of Rs 2 coins is 3 times the number of Rs 5 coins. the total number of coins is 160. How many coins of each denominations are with me?
Answer» Answer: Let the number of Rs 5 coins is x. Therefore, number of Rs 2 coins = 3x Let the number of Rs 1 coins is z TOTAL number of coins = 160 z + 3x + x = 160 Therefore, number of Rs 1 coins = 160 - 3x -x = 160 - 4x Total amount = 300 (160-4x) + 2 X (3x) + 5 X x = 300 160 - 4x + 6x + 5x = 300 160 + 7X = 300 7x = 300-160 = 140 x = 140/7 = 20 Therefore, number of Rs 1 coins = 160 - 4x = 160 - 4 X 20 = 160-80 = 80 number of Rs 2 coins = 3x = 3 X 20 = 60 number of Rs 5 coins = x = 20 Hope this helps you.

i have total of 300 RS in coins of denomination Rs1 Rs2 and Rs5 the number of Rs 2 coins is 3 times the number of Rs 5 coins. the total number of coins is 160. How many coins of each denominations are with me?

Answer»

Answer:

Let the number of Rs 5 coins is x.

Therefore, number of Rs 2 coins = 3x

Let the number of Rs 1 coins is z

TOTAL number of coins = 160

z + 3x + x = 160

Therefore, number of Rs 1 coins = 160 - 3x -x = 160 - 4x

Total amount = 300

(160-4x) + 2 X (3x) + 5 X x = 300

160 - 4x + 6x + 5x = 300

160 + 7X = 300

7x = 300-160 = 140

x = 140/7 = 20

Therefore,

number of Rs 1 coins = 160 - 4x = 160 - 4 X 20 = 160-80 = 80

number of Rs 2 coins = 3x = 3 X 20 = 60

number of Rs 5 coins = x = 20

Hope this helps you.