Question

Venkat earns Rs. 80 in 7 hours and madhu Rs. 90 in 12 hours. The Ratio of their earnings is_______
a) 32:21 b) 23:12 c) 8:9 d) None of these​

Answer 1

Correct option is C 32:21

Answer 2

Step-by-step explanation:

Venkat earns in 7 hours = Rs. 80

He Earns in 1 hour = Rs. 80/7

Now, Madhu earns in 12 hours = Rs. 90

She earns in 1 hour = Rs. 90 /12

$\frac{ (\frac{80}{7}) }{( \frac{90}{12}) }$

$\frac{80}{7} \times \frac{12}{90}$

$\frac{96}{63}$

$\frac{32}{21}$

(a) 32:21