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larisa [96]
3 years ago
7

Rolando is 13. In five years, his age be 2/3 the age of his sister Marisa . How los will Marissa be in three years?​

Mathematics
1 answer:
RSB [31]3 years ago
7 0

Answer:

25

Step-by-step explanation:

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5/8 - 3/10 <br> A. 13/40 <br> B. 1/20 <br> C. 1/4<br> D. 1/5
densk [106]

5/8 - 3/10

Find the common denominator:

Multiples of 8:  8, 16, 24, 32, 40 (8 x 5 = 40)

Multiples of 10: 10, 20, 30, 40  (10 x 4 = 40)


5/8 = 5*5 / 8*5 = 25/40

3/10 = 3*4 / 10 *4 = 12/40


Now you have 25/40 - 12/40

25 -12 = 13

Answer = 13/40


The answer is A.

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