Answer:
7
Step-by-step explanation:
5x-x=28 The dad is 5 times as old and the difference in their ages is 28years.
4x=28 Simplify and divide.
x=7
C=71.91. plug 100 into the equation as x, then solve for C
Answer:
24
20
4
Step-by-step explanation:
⅘×30=24... 4×30=120, 5×30=150... 120/150
120/2=60
150/2=75
60/75= 0.8
⅘= 0.8
do the same with all of the others
Answer:
The girl which read 3/6 of a chapter book read more pages than the other girl.
Step-by-step explanation:
We need to compare between
so, the denominator of both fractions should be the same number
Factor of 6 = 1 * 2 * * 3
Factor of 8 = 1 * 2 * 2 * 2
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The common denominator = 1 * 2 * 2 * 2 * 3 = 24
Then compare between
So, the fraction of the great numerator will be the great fraction
∴
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<u>Another solution:</u>
Convert both fractions to decimal:
3/8 = 0.375
3/6 = 0.5
0.5 > 0.375
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<u>Third Solution: </u>
As the numerators are equal
The fraction of least denominator is the great fraction
So, 3/6 > 3/8