Question

a sum of rs 36.90 is made of 180 coins which are either 10 paise coin or 25 paise coin the number of 10 paise coin is

Answer 1

hey mate,

total number of coins=180
let x be number of 10p coins and y be number of 25p coins

x+y=180------(1)

given 10p coins and 25p coins make the sum =RS= 36.90

$\frac{10x}{100} + \frac{25y}{100 } = 36.90 \\ 10x + 25y = 3690.......(2) \\ solving1)and2) \\ 10x + 10y = 1800 \\ 10x + 25y = 3690 \\ \\ y = 126 \\ x = 54 \\ \\ \\ i \: hope \: this \: helps \: you.......$

#vaibhav

Answer 2

Answer: 54

Step-by-step explanation:Given that total no. of coin =180

let x be the no. of 25 p coin

and (180-x) be the no. of 10 p coin

A/Q,  25 x +10 (180-x) = 3690

25 x + 1800 - 10 x =3690

15 x =3690-1800

15 x =1890

x = 126 (no. of 25 p coin)

So ,no. of 10 p coin = 180-126 =54