This document contains 12 math word problems divided into multiple sections. The problems involve calculating proportions, unit rates, percentages, and solving equations. They cover topics like proportions, unit pricing, time/speed/distance, percentages, and ratio/proportion word problems. The full document would need to be reviewed to provide detailed summaries of each individual problem, but this high-level summary captures the essential information about the document's content and structure.

1. UNIT 08 March
1. In a bag of 200 marbles, 70 are green and the rest are blue. What proportion are
green?
2. Are the following magnitudes proportions? Which kind?
a) The watermellon´s weight and its price.
b) The heigh of a person and its age.
c) The book´s price and the number of pages.
d) The number of workers unloding a truck and the time they late.
e) The aplees´ price and the number of kilos i can buy with the money I have.
3. A couple of kilos of pears cost 1,80 €:
a) How much is a kilo?
b) How much are 3 kilos?
4. Solve:
a) A couple ok kilos of potatoes cost 0,80 €. How much are 5 kilos?
Axel Cotón Gutiérrez Mathematics 1º ESO Exercises – 1.8.2.1

2. UNIT 08 March
b) A kangaroo moves forward 12 meters with 4 jumps. How many meters will
the kangaroo moves with 10 jumps?
c) Three loaves of bread weigh 600 grams. How much two loaves of bread
weight?
d) For renting a bike during 2 hours i have paid 3 €. How much should i pay for
renting the bike during 7 hours?
5. Find the value of x:
𝒂𝒂)
𝟏𝟏
𝟑𝟑
=
𝟓𝟓
𝒙𝒙
𝒃𝒃)
𝟔𝟔
𝟗𝟗
=
𝟏𝟏𝟏𝟏
𝒙𝒙
𝒄𝒄)
𝟓𝟓
𝒙𝒙
=
𝟐𝟐
𝟔𝟔
𝒅𝒅)
𝟕𝟕, 𝟓𝟓
𝒙𝒙
=
𝟎𝟎, 𝟓𝟓
𝟎𝟎, 𝟔𝟔
6. A piece of cheese of 400 grams cost 4,60 €. How much will cost a piece of 320
grams?
Axel Cotón Gutiérrez Mathematics 1º ESO Exercises – 1.8.2.2

3. UNIT 08 March
7. Four horses eat a sack of feed in 6 days.
a) How much time will the sack of feed with 8 horses?
b) And with 12 horses?
8. A water tap gives 2 liters per minute and fill up a tank in 15 minutes. How much
will late another water tap that gives 5 liters per minute?
9. Marta walks at 4 km/h and she lates 30 minutes to arrive at home. How much
will late Pedro on a bike at 15 km/h?
Axel Cotón Gutiérrez Mathematics 1º ESO Exercises – 1.8.2.3

4. UNIT 08 March
10. In my classroom we are 26 students and there are 8 that have more than a 7 in
Maths. What is the percentage of people bellow 7?
11. A family spends 150 dollars per month for vegetables when the cost of
vegetables is 5 dollars per kg. How much amount must the family spend per
month, if the cost of vegetables goes up to 5.75 dollars per kg?
12. In a camp, there is food for 5 weeks for 1,200 people. If 400 more people joined
the camp, for how many weeks will the food last?
Axel Cotón Gutiérrez Mathematics 1º ESO Exercises – 1.8.2.4