A tile measures 75 cm by 20 cm. How many tiles will be required to cover a floor of

Mathematics

2 answers:

BabaBlast [244]3 years ago

4 0

Answer:

Step-by-step explanation:

75cm×20cm=150cm=1.5m

4m×3m=12m

12m÷1.5=8

Anuta_ua [19.1K]3 years ago

3 0

Answer:

80 tiles

Step-by-step explanation:

Convert m to cm:

1 m = 100 cm
4 m = 400 cm
3 m = 300 cm

Find the areas of the floor and 1 tile:

Floor: 400 × 300 = 120,000 cm
Tile: 75 × 20 = 1500 cm

Divide the areas to find the amount of tiles required to cover the floor:

120,000 ÷ 1500 = 80 tiles

I hope this helps!

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Suppose that there are 25 students in a class, each either a freshman, a sophomore, or a junior. How many students must be in th

Yakvenalex [24]

Answer:

at least 9 students in each cohort.

Step-by-step explanation:

Given that :

In a class, there are 25 students and each of them is either a sophomore, a freshman or a junior. We have to determine the number students in the same cohort.

Let us suppose there are equal number of students in each of the cohort.

Now let us assume that the number of the students in each cohort be 8, i.e. each as a freshman, a junior or a sophomore. Therefore, the total number in the all the cohorts will be 24 students only.

Thus, we can say that there are at least $9$ freshman, at least $9$ sophomore or at least $9$ junior in each of the cohort.