Question

$600gm$ of Sugar solution has $40\%$ sugar in it. How much sugar should be added to make it $50\%$ in the solution?

• A. $60gm$
• B. $90gm$
• C. $120gm$
• D. $150gm$

Answer 1

The correct option is C $120gm$

$\frac{40}{100}\times 600=240$

$\therefore 240g$ of sugar is present is $600g$ of solution.

$\frac{240+x}{600+x}=\frac{1}{2}$ $(50\%$ of solution)

$480+2x=600+x$

$2x-x=600-480$

$x=120$

$\therefore 120g$ of sugar must be added.