The difference between two numbers is 8. If twice the larger number is 4 more than three times the smaller number, what is the larger number?
20
Let the larger number be \(L\) and the smaller be \(S\).
From the first condition: \(L-S=8\), so \(S=L-8\).
From the second condition: \(2L=3S+4\).
Substitute \(S=L-8\): \(2L=3(L-8)+4=3L-24+4=3L-20\).
Rearrange: \(20=3L-2L=L\), so \(L=20\).
Hence, the larger number is 20.
If $2x - 3y = -1$ and $\frac{x}{x+y} = \frac{7}{12}$, then the value of $2xy$ is:
What is the solution of the following equations ?
2x + 3y = 12 and 3x − 2y = 5
Two positive numbers differ by 1280. When the greater number is divided by the smaller number, the quotient is 7 and the remainder is 50. The greater number is:
When 5 children from class A join class B, the number of children in both classes is the same. If 25 children from B, join A, then the number of children in A becomes double the number of children in B. The ratio of the number of children in A to those in B is:
If (x + 6y) = 8, and xy = 2, where x > 0, what is the value of (x 3+ 216y 3)?
If 8k 6+ 15k 3– 2 = 0, then the positive value of \(\left( {{\rm{k}}\,{\rm{ + }}\,\frac{1}{{\rm{k}}}} \right)\) is :