Question

If 40% of 70 is x more than 30% of 80, then find x.​

Answer 1

The value of x is 4

Step-by-step explanation:

Step 1: Assume the number to be X

Step 2: To Calculate the value of 40% of 70

Step 3: 40% of 70  

40/100 x 70

=28

Step 4: To Calculate the value of 30% of 80

30/100×80

=24

Now coming to the question

Step 5: Framing an equation is

40% of 70 =X+ 30% of 80

Step 6: 28 = X + 24  

X=28 - 24

X=4

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Answer 2

GIVEN:

40% of 70 is x more than 30% of 80

TO FIND:

value of x = ?

SOLUTION:

$\bold {ACCORDING \: TO \: QUESTION}$

40% of 70 = 30% of 80 + x

$\tt⎇ \frac{40}{100} \times 70 = \frac{30}{100} \times 80 + x$

solve it,

$\tt⎇ \frac{2800}{100} = \frac{2400}{100} + x$

$\tt⎇ \frac{28 \cancel{00}}{1 \cancel{00}} = \frac{24 \cancel{00}}{1 \cancel{00}} + x$

$\tt⎇ 28 = 24 + x$

$\tt⎇ x = 28 - 24$

$\tt⎇ x = 4$

Hence, x = 4.