Final answer:
The ratio of Mustapha's age to his younger brother's age is 3:2. In 6 years, Mustapha will be 24 years old while his brother will be 18 years old. The future ratio of Suleiman's age to Mustapha's age will be 13:12.
Step-by-step explanation:
To find the ratio of Mustapha's age to his younger brother's age, we simply divide Mustapha's age by his brother's age. So, the ratio is 18/12, which simplifies to 3/2 or 1.5:1.
To determine how old Mustapha and his brother will be in 6 years, we add 6 to their current ages. Mustapha will be 24 years old (18 + 6) and his brother will be 18 years old (12 + 6).
To find the ratio of Suleiman's age to Mustapha's age in the future, we divide Suleiman's future age by Mustapha's future age. If Suleiman is 26 years old in the future and Mustapha is 24, then the ratio is 26/24, which simplifies to 13/12.
A ratio is an ordered pair of numbers a and b, written a / b where b does not equal 0. A proportion is an equation in which two ratios are set equal to each other. For example, if there is 1 boy and 3 girls you could write the ratio as: 1 : 3 (for every one boy there are 3 girls).