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Arisa [49]
3 years ago
7

Estimate 58% of 121 by using 10%

Mathematics
2 answers:
Basile [38]3 years ago
7 0
58% is about equal to 60%, or 6 times 10%. 10% of 121 is 12.1.
12.1 * 6 = 72.6
To take this further, 58% is 2% less than 60%, or 2 times 1%. 1% of 121 is 1.21.
72.6  - (1.21 * 2) = 72.6 - 2.42 = 70.18
dsp733 years ago
3 0

Answer:

58% of 121 by using 10% is 70.18.

Step-by-step explanation:

Given : 58% of 121.

To find  : estimate 58% of 121 by using 10%.

Solution : We have given  58%

Estimate of  58% is 60%

We need to use 10%

We can write 60%  as 6 times of 10%

Since , 10% of 121

10*\frac{121}{100} =  12.1

60%  =  6 times of 10%

Plugging the values

60%  == 6 times of 12.1

6 *12.1 = 72 .6

To take this further, 58% is 2% less than 60%, or 2 times 1%. 1% of 121 is 1.21.

72.6  - (1.21 * 2) = 72.6 - 2.42 = 70.18

Therefore,  58% of 121 by using 10% is 70.18.

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