Question

‘x' number of men can finish a piece of work in 30 days. if there were 6 men more, the work could be finished in 10 days less. the original number of men is पुरुषों की ‘x' संख्या एक कार्य को 30 दिनों मे पुरा कर सकते है. यदि इसमें 6 और पुरुष जोड़ दिए जाए, तो कार्य को पुरा करने में 10दिन कम लगेंगे. पुरुषों की वास्तविक संख्या ज्ञात कीजिये? (a) 6 (b) 10 (c) 12 (d) 15

Answer 1

in 30 days a piece of work finished by X men
then, in (30- 10)= 20 days the work finished by
30x/20 days = 3x/2 days

now, 3x/2 = x + 6

3x = 2x +12

x = 12