Math, asked by neeti57, 11 months ago

90.12. दो व्यक्ति A तथा B किसी कार्य (work) को<br />कमशः (Consicutive) 15 व 20 घण्टे (hours) में कर<br />सकते हैं। A कितने दिन बाद कार्य (work) करना<br />बंद कर दे, कि कार्यं (Work) पूर्णतः (Completely)<br />10 दिन में (End) हो जाए?<br />(1) 10 (b) 5 (c) 4 (d) Not​

Answers

Answered by heeralalnitharwal3
1

Answer:D

X/15 + 10/20 = 1

X = 7.5

Step-by-step explanation:

Answered by ritren
0

Answer:

X/15

B/20

15×20/10

300/10

30

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