A group of 10 people plan to contribute equally to pay for a friend’s gift that costs G dollars. If n additional people want to contribute to pay for the gift, the required contribution per person will be reduced by how many dollars?
সমাধান
সঠিক উত্তর: Option A
People =10
Total cost=G dollar
Per person cost= G/10 dollar
If n additional people want to contribute to pay for the gift then Per person cost =G/(10+n)
Reduced = G/10- G/(10+n) = Gn/(100+10n)
