Question

anchal collected a sum of ruppess 150 in a piggy bank. she has put only ruppess 2,5,10 coins. if ruppess 10and5 coins are in ratio 3:7 and there are 30 coins in total, find the number of coins of each type
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Answer 1

Answer:

₹ 2 coins = 10

₹ 5 coins = 14

₹ 10 coins = 6

Step-by-step explanation:

number of Rs 10 coins = 3x

number of Rs. 5 coins  = 7x

number of Rs 2 coins = 30 - 3x +7x = 30 - 10x

total rs  = 150

(3x X 10) + (7x X 5) + 2(30 - 10x) = 150

30x + 35x + 60 - 20x = 150

45x = 150 - 60

x = 90/45 = 2

Number of 10 rupee coins = 3x= 6

Number of 5 rupee coins = 7x = 14

Number of 2 rupee coins = 30 - 10x = 30 - 20 = 10

Answer 2

Answer:

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