Question

MARKS:
4 men and 6 boys can finish a piece of work in 5 days while 3 men and 4 boys can finish it in 7 days.
Find the time taken by 1 man alone or that by 1 boy alone.
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Answer 1

Answer:

men=x boys=y

The answer has been given in above attachment

HOPE SO THIS MAY HELP U

Answer 2

Answer:

men= 11

boy= -6.5

Step-by-step explanation:

using simultaneous equation

4x+6y=5 (x=mens y=boys)

3x+4y=7

x=   $\frac{5-6y}{4}$  -1 eq

y=$\frac{7-4y}{3}$     -2 eq

$\frac{5-6y}{4}$ =$\frac{7-4y}{3}$

28-16y=15-18y

2y=-13

y=$\frac{-13}{2}$

y=-6.5

x=$\frac{7+26}{4}$

x=11