Question

7.) A family bought 5 litres of cooking oil on the first day of the month. If
1 litres of oil was left over at the end of the month, then what was the
family's consumption of cooking oil during that month?​

Answer 1

Litres of cooking oil with the family = 5 litres

This is the initial reserve oil of the family.

The family consumes 1.25 litres of oil during the whole month in activities such as cooking and heating.

Thus the remaining oil with the family after all their consumption will be 5-1.25=3.75 litres

FINAL ANSWER:-

The remaining oil with family =3.75 litres

@Yoursenorita