Answer:
9 cows and 15 ducks
Explanation:
step 1: create a system of equations, using the variable c for cows and d for ducks.
step 2: solve for d in the first equation, then plug it into the second, so that we can solve for c.
step 3: solve for c
step 4: now that we know what c is, plug c back into the first equation, and solve for d
step 5: solve for d, which gives you 15 ducks. We found c in step 3, which is 9 cows.
5. The cost of my school exercise book was Rs. 10. Now she has to pay Rs
the same exercise book for Rs. 12. Let's calculate the percentage increses
price of the excercise book
[tex]\underline{\bf{\dag} \:\bold{As\;we\;know\: that\: :}}[/tex]
[tex]\sf Increase \% = \dfrac{(Value\;Increased)}{Initial\; Value} \times 100 \%[/tex]
According to the question,
→ Increase of Price = ( Rs. 12 - Rs. 10 )
⇒ Rs. 2
→ Initial Value = Rs. 10
Let's solve by putting the values in the formula !
[tex]\sf \leadsto \dfrac{2}{10} \times 100 \%[/tex]
⇝2×10%
⇝20%
∴ The percent of increase in price of that school exercise book is 20 %
[tex]\huge\bf\maltese{\underline{\red{Thanks}}}\maltese[/tex]
Jeremy is looking for a lost paperclip in his room He divides his room into a set of 12-
inch by 12-inch squares and creates a search grid. Jeremy begins in the top left comer
and searches each square grid working his way across the room slowly and methodically.
Jeremy's step-by-step approach is an example of using