Problems based on Numbers Test 5

Let the number of coins of 50 paise = x
Number of coins of 10 paise = 2x
Total paise = 50 × x = 50x
Total paise of 10 paise coins = 10 × 2x = 20x
According to the statement,
50x + 20x = 2,100 paise
$70\mathit{x}=2100$
$\mathit{x}=\frac{2100}{70}=30$
Number of 10 paise coins $=2\mathit{x}=2\times 30=60$ coins.