Question

A, B and C together earn Rs. 300 per day, while
A and C together earn Rs. 188 and B and C
together earn Rs. 152. The daily earning of C
is:
(a) Rs. 40 (b) Rs. 70
(c) Rs. 112 (d) Rs. 160

Answer 1

Answer: (a) Rs.40

Step-by-step explanation:

Let daily earning of A, B & C be Rs.A , Rs. B & Rs. C respectively.

Given,

A+B+C = Rs.300---------eq(1)

& A+C= Rs.188------------eq(2)

& B+C= Rs.152------------eq(3)

Now,

Since, A+B+C=300

=> A+(B+C)=300

=> A+152=300 [from eq(3)]

=> A=300-152

Therefore, A=148

Now, from eq(2)

Since, A+C=188

=> 148+C=188 (since A=148)

=> C= 188-148

Therefore, C=40-------Answer...

Hope, now you can solve such questions...Happy to help you.