15. Write this ratio as a percent by using a proportion and then find the percent which is equivalent to the given ratio: 112 out of 160 . $89 \%$ $62.5 \%$ $70 \%$ $60 \%$

Step 1 ：First, we need to write the ratio as a fraction: \(\frac{112}{160}\).

Step 2 ：Next, we convert this fraction to a decimal by dividing the numerator by the denominator: \(\frac{112}{160} = 0.7\).

Step 3 ：Then, we convert the decimal to a percent by multiplying by 100: \(0.7 \times 100 = 70\%\).

Step 4 ：So, the percent which is equivalent to the given ratio 112 out of 160 is \(\boxed{70\%}\).