# The alloy contains 76% of tin, how many grams of tin is contained in a piece of alloy whose mass

**The alloy contains 76% of tin, how many grams of tin is contained in a piece of alloy whose mass is 200 grams, determine how much was on the deposit in the bank if the income of 6% accrued on it was 120 rubles, determine how many percent is the number 120 from 200**

The weight of the alloy and the concentration of tin in the alloy are known. Accordingly, in order to find the mass of tin in the alloy, it is necessary to multiply the above values.

M = 200 g;

a = 0.76;

x = a * M = 0.76 * 200 = 152 g.

Tin in the alloy 152 grams.

There is a deposit in the bank at 6%. Interest income from the deposit was 120 rubles. In order to calculate the amount of the deposit, it is necessary to divide the income into the part that it amounted to in relation to the deposit.

x = 120: 0.06 = 2000 rubles was the contribution.

To determine how many percent will be the number 120 from 200, you need to divide the first number by the second, and multiply the quotient by 100 percent.

120/200 * 100% = 3/5 * 100% = 60%.