In this question, we show that –

By checking Option A,

95 × 19 ÷ 5 + 3 – 5 = 30

After changing the symbols,

95 ÷ 19 × 5 – 3 + 5 = 30

Applying BODMAS we get,

25 – 3 + 5 = 30

30 – 3 = 30

27 = 30

Therefore, 95 × 19 ÷ 5 + 3 – 5 = 30 is not the correct equation.

By checking Option B,

40 + 10 – 5 ÷ 2 = 45

After changing the symbols,

40 – 10 + 5 × 2 = 45

Applying BODMAS we get,

40 – 10 + 10 = 45

50 – 10 = 45

40 = 45

Therefore, 40 + 10 – 5 ÷ 2 = 45 is not the correct equation.

By checking Option C,

55 – 5 + 3 ÷ 7 = 40

After changing the symbols,

55 + 5 – 3 × 7 = 40

Applying BODMAS we get,

55 + 5 – 21 = 40

60 – 21 = 40

39 = 40

Therefore, 55 – 5 + 3 ÷ 7 = 40 is not the correct equation.

By checking Option D,

35 ÷ 2 + 3 – 10 × 5 = 69

After changing the symbols,

35 × 2 – 3 + 10 ÷ 5 = 69

Applying BODMAS we get,

70 – 3 + 2 = 69

72 – 3 = 69

69 = 69

Therefore, 35 ÷ 2 + 3 – 10 × 5 = 69 is the correct equation.

Hence, the correct answer is option D.

Given : 18 + 6 ÷ 7 × 5 – 2
After converting the signs we get;

18 ÷ 6 × 7 – 5 + 2 (applying BODMAS)

→ 3 × 7 – 5 + 2
→ 21 – 5 + 2
→ 23 – 5 = 18

Hence, option B is the correct response.

After changing the symbols,

15 × 2 – 900 ÷ 90 + 100 (applying BODMAS rule)

=>15 × 2 – 10 + 100

=>30 – 10 + 100

=>130 – 10

=>120

Hence, option B is the correct answer. 

In this question, we show that ‘×’ means ‘÷’, ‘÷’ means ‘−’, ‘+’ means ‘×’, and ‘−’ means ‘+’, then

256 ÷ 4 – 30 + 12 × 7 =?

According to BODMAS rule (BODMAS is an acronym and it stands for Bracket, Of, Division, Multiplication, Addition and Subtraction.) –

? = 64 – 30 + 12 × 7

? = 64 – 30 + 84

? = 148 – 30

? = 118

So the correct answer is option C.