Question

PROBLEM SUM
CH:-APPLICATION OF RATIO AND PROPORTION
CLASS:-7
QUESTION
NO:-1
A CAN DO A PIECE OF WORK IN 12 DAYS AND B IN 16 DAYS. THEY WORKED TOGETHER FOR 4 DAYS. C THEN FINISHED THE WORK IN 10 DAYS. HOW LONG WILL C TAKE TO DO THE WHOLE WORK?

NO:-2
A DOES 7/10 OF A PIECE OF WORK IN 14 DAYS; HE THEN CALLS IN B, AND THEY FINISH THE WORK IN 2 DAYS. HOW LONG WOULD B TAKE TO DO THE WORK BY HIMSELF?


REST QUESTIONS IN THE ATTACHMENT.
STEP BY STEP SOLUTION NEEDED
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Answer 1

Answer:

C take 15 days to complete the whole work