Question

the cost of 5 apples is ruppes 60.how much money is needed to buy 20 apples​

Answer 1

Answer:

5apples = 60

1apple = 60/5

= 12

so for 20 apples it will be 12×20

rupees 240

plss mark me the brainliest

Answer 2

Answer:

240 Rs

Step-by-step explanation:

Cost of 5 apples = 60 Rs

Cost of 20 apples = x Rs

More the apples , more the cost. Which means it's a direct proportion based Question.

So,

$\overbrace{a \: \: \: \: \: \: \: : \: \: \: \: \: \underbrace{b \: \: \: \: \: \: \: \: \: \: \: : \: \: \: \: \: \: \: \: \: \: \: \: \: c }\: \: \: \: \: \: \: \: \: \: \: d}$

$\overbrace{5 \: \: \: \: \: \: \: : \: \: \: \: \: \underbrace{60 \: \: \: \: \: \: \: \: \: \: \: : \: \: \: \: \: \: \: \: \: \: \: \: \: 20 }\: \: \: \: \: \: \: \: \: \: \: x}$

$\implies \sf \: 5x = 60 \times 20$

$\implies \sf \: \dfrac{60 \times 20}{5}$

$\sf \: \implies \: x = 60 \times 4$

$\implies \sf \: 240 \: rupees$

What you need to know !

• An equation usually consists of terms and variables.

• The variables carries unknown value , which is generally intended to find.

• In an equation we substitute the known values and perform few addition and subtraction to find out the value of unknown.

• Solving an equation has. a base on undoing an operation.

• An operation can be undone by performing an opposite operation like performing subtraction over addition to find out unknown.

• The most important and first step to solve an equation is correctly framing it.