If the total amount of cheese a trader has is 48 kg, and he sold 5.62 kg in the first day and 17.825 kg in the day after, find how many kilograms he has left rounded to the nearest hundredth.
There are 110 boys and 70 girls in a certain school grade. If three fifths of the boys and of the girls participated in a charity event, how many more boys than girls participated in the event?
There are 120 boys and 60 girls in a certain school grade. If one half of the boys and of the girls participated in a charity event, how many more boys than girls participated in the event?
A girl walks 5 kilometres in 60 minutes at a constant speed. If she continues walking at this speed, how many kilometres will she walk in 120 minutes?
A small town has 640 residents. If of the residents live in houses, and of those residents, only own pets, determine how many of the town’s residents are pet owners.
In a school, there are 812 students in the first two grades and twice this number in the other grades. How many students are in the school?
On a day, a restaurant offered a free drink for 2 out of every 5 customers. If the restaurant received 90 customers that day, how many drinks were given for free?