Question

A and b undertook to do a piece of work for rs. 4500. A alone could do it in 8 days and b alone in 12 days. With the assistance of c, they finished the work in 4 days. C's share of money is? Select one:

a. Rs. 2250

b. Rs. 375

c. Rs. 750

d. Rs. 1500

Answer 1

the answer is 1500 d.

Answer 2

Answer: Option 'c' is correct.

Step-by-step explanation:

Since we have given that

Total amount A and B undertook = 4500

Number of days A alone could do = 8 days

Number of days B alone could do = 12 days

With the assistance of C , number of days they can do = 4 days

L.C.M. of 8, 12, 4 = 24

So, Number of units A can do = $\dfrac{24}{8}=3$

Number of units B can do = $\dfrac{24}{12}=2$

Number of units A, B, and C can do = $\dfrac{24}{4}=6$

So, 6-(3+2)=6-5=1

So, C's share of money is given by

$\dfrac{1}{6}\times 4500\\\\=Rs. 750$

Hence, Option 'c' is correct.