Find x in the following:

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RPF Constable 2024 Official Paper (Held On 03 Mar, 2025 Shift 1)
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Answer (Detailed Solution Below)

Option 4 :
Free
General Science for All Railway Exams Mock Test
20 Qs. 20 Marks 15 Mins

Detailed Solution

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Given:

6 7/15 + x = 8 3/5

Formula used:

x = RHS − LHS

Convert mixed numbers to improper fractions

Calculation:

6 (7/15) = (6 × 15 + 7)/15 = 97/15

8 (3/5) = (8 × 5 + 3)/5 = 43/5

⇒ x = 43/5 − 97/15

LCM of 5 and 15 = 15

⇒ x = (43 × 3)/15 − 97/15

⇒ x = 129/15 − 97/15

⇒ x = (129 − 97)/15 = 32/15

⇒ x = 

∴ The correct answer is

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