Question Number 81523 by Power last updated on 13/Feb/20
Commented by mr W last updated on 14/Feb/20
$$=\mathrm{100} \\ $$
Commented by Power last updated on 14/Feb/20
$$\boldsymbol{\mathrm{solution}}\:\boldsymbol{\mathrm{sir}}\:\boldsymbol{\mathrm{please}} \\ $$