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bazaltina [42]
2 years ago
12

Work out the sum of 1/3, 1/5 and 3/10 Give your answer in its simplest form.

Mathematics
2 answers:
jek_recluse [69]2 years ago
6 0
5/6
Here’s how
10/30 plus 6/30 plus 9/30 which equals 25/30 but simplifies to 5/6
Nonamiya [84]2 years ago
5 0

Answer:

5/6

Step-by-step explanation:

1/3 x 1/5 = 8/15 then add to 3/10 and you get 5/6 simplifed

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Students were surveyed about their favorite colors 1/4 of the students preferred read 1/8 of the students preferred blue and 3/5
Elanso [62]

Answer: the number of students that were surveyed is 40

Step-by-step explanation:

Let x = total number of students that were surveyed about their favorite colors

1/4 of the students preferred red.

This means that the number of students that preferred red is 1/4 × x = x/4

1/8 of the students preferred blue.

This means that the number of students that preferred blue is 1/8 × x = x/8

The remaining number of students will be the total number of students - the sum of the number of students that preferred red and the number of students that preferred blue. It becomes

x - (x/4 + x/8) = x - 3x/8 = 5x/8

3/5 of the remaining students were for green. This means that the number of students that preferred green is 3/5 × 5x/8 = 3x/8

if 15 students prefer green, then

3x/8 = 15

3x = 120

x = 120/3 = 40 students

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3 years ago
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