Question

Sam has 3/4 kg of toffees. If he gives 3/8 kg to Mike, how many will he have left?

Answer 1

Number toffees Sam had = 3/4 kg.
Number of toffees he gave to Mike = 3/8 kg.
Toffees left = 3/4 - 3/8 = 0.75 - 0.375 = 0.375 kg.
Number of toffees he had left = 3/8 kg.

Answer 2

`(3)/(4)kg-(3)/(8)kg\\\\LCD((3)/(4);\ (3)/(8))\\\\list\ the\ multiples\ of\ 4:\ 0;\ 4;\ \fbox8;\ 12;...\\\\LCD((3)/(4);\ (3)/(8))=8\\\\(3)/(4)=(3*2)/(4*2)=(6)/(8)\\\\(3)/(4)kg-(3)/(8)kg=(6)/(8)kg-(3)/(8)kg=(6-3)/(8)kg=(3)/(8)kg\\\\Answer:Mike\ had\ left\ (3)/(8)kg\ of\ toffees.`