Let’s assume the cost of $1$ table is a and cost of $1$ chair is b. Then, according to the question $4a+3b=2250$ … (a) $3a+4b=1950$ … (b) On multiplying (a) with $3$ and (b) with $4$, We get,...

Let the cost of a bag and a pen be a and b, respectively. Then, according to the question $3a+4b=257$ … (a) $4a+3b=324$ … (b) On multiplying equation (a) by $3$ and (b) by $4$, We get, $9a+12b=770$...

Let the cost price of one table and one chair be ₹ a and ₹ b, respectively. The selling price of the table, when it’s sold at a profit of $10\%=₹a+10a/100=₹110a/100$ The selling price of the chair,...

Let’s assume the cost of a book and a pen are ₹ a and ₹ b, respectively. According to the question $5a+7b=79$… (a) $7a+5b=77$… (b) multiplying equation (a)by $5$ and (b)by $7$, We get,...

Let’s assume the number of pens and pencils are a and b, respectively. Forming equations according to the question, we have $a+b=40$… (a) $(b+5)=4(a-5)$ $b+5=4a–20$ $5+20=4a–b$ $4a –b=25$… (b)...

Let’s assume the cost of a pen and pencil be ₹ a and ₹ b respectively. Then, forming equations according to the question $5a+6b=9$…(a) $3a+2b=5$…(b) On multiplying equation (a)by $2$ and equation...