SG chevron_right Primary 5 chevron_right Number and Algebra

SG chevron_right Primary 5 chevron_right Number and Algebra

SG chevron_right Primary 6 chevron_right Number and Algebra

Please heeeelllllpp...

SG chevron_right Primary 6 chevron_right Number and Algebra

SG chevron_right Primary 6 chevron_right Number and Algebra

Mr. Green is 7 times as old as his son Blue 7 years ago. If the sum of their present ages is 78 years, how old is Mr. Green now?