Question

If $21$ cows eat as much as $15$ buffaloes, how many cows will eat us much as $35$ buffaloes?

• A. $45$
• B. $49$
• C. $56$
• D. $54$

Answer 1

Answer: (B)

$49$

$21:15=x:35$

Product of means = product of extremes

$15\times x=35\times 21$

$x=\frac{35\times 21}{15}$

$x=7\times 7$

$x=49$