Question

B earns $20\%$ more than A, C earns $25\%$ more than B. D earns $30\%$ more than C. If D earns Rs $975$, then how much does A earn?

Answer 1

$d=\frac{130}{100}\times C$ (given)

$\Rightarrow c=975\times \frac{10}{13}=750c=\frac{125}{100}\times b\Rightarrow b=750\times \frac{100}{125}=600b=\frac{120}{100}\times a\Rightarrow a=600\times \frac{100}{120}=500$