Sumali sa IDNStudy.com at makakuha ng maraming kaalaman. Tuklasin ang malalim na sagot sa iyong mga tanong mula sa aming komunidad ng mga bihasang propesyonal.

The ratio of two numbers is 7:4. If 8 is subtracted from the larger and 3 from the smaller, the new ratio will be 5:3. Find the smaller of the original numbers

Sagot :

We let the first number be 7x, this would make the second 4x so:
7x - 8: 4x - 3 = 5 : 3
7x - 8 = 5
4x - 3    3
We cross-multiply:
21x - 24 = 20x - 15
21x - 20x = -15 + 24
x = 9

Therefore the smaller of the original numbers is 4x = 36