Question

28) A cow and calf cost Rs 2000 and Rs 1400
respectively. If the price of the cow and that
of the calf is increased by 20% and 30%
respectively. Then the price of 1 dozen cows
and 2 dozens calves is​

Answer 1

Answer:

Ans.

price of cow-28800

price of calf -43200

Step-by-step explanation:

please find stem by you

Answer 2

Conclusion

Percentage

A percentage (from Latin: per centum, "by a hundred") is a quantity or ratio stated as a fraction of 100 in mathematics. The percent symbol, "%," is commonly used, however the abbreviations "pct.", "pct," and sometimes "pc" are also used. A % is a dimensionless (pure) number; it does not have a unit of measurement.

Main Solution

A crow and calf cost Rs 2000 and 1400

If cost of cow = 2000

when increase by 20%

$\frac{20}{100} \times 2000 = 400$

So, New cost of the cow is 2000 + 400 = 2400

For calf

If cost of Calf = 1400

when increase by 30%

$\frac{30}{100} \times 1400 = 420$

So, New cost of the Calf is 1400 + 420 = 1820

Now, Price of 1 dozen Cows

$2400 \times 12 = 28,800$

$1820 \times 12 = 21,840$

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