Class-7 - Maths - Chapter-4 - Simple Equations

An equation in which the highest index of the variables present is one is called

• simple equation

• linear equation

• multi equation

• none of these

The solution of 3(b+2) - (b-8) = 3(b+8) is

• -10

• 10

• 2

• -3

The solution of $\frac{3x-1}{5}-\frac{1+x}{2}=3-\frac{x-1}{2}$ is

• 5

• -7

• 7

• -5

The solution of

0.2(2x-1) - 0.5(3x-1) = 0.4 is

• $\frac{1}{11}$

• $-\frac{1}{11}$

• $\frac{3}{11}$

• $-\frac{3}{11}$

A number exceeds by 40 when added by 20% of itself . The number is

• 800

• 200

• 100

• 320

If 20% of 60% of a number id 144 , then the number is

• 1200

• 2880

• 8640

• None

A student has to secure 35% marks to pass . He got 80 marks and failed by 60 marks . Find the maximum marks .

• 100

• 200

• 300

• 400

There were only two candidates who participated in an election. One contestant got 62% votes and was elected by a margin of 144 votes. The total number of votes were

• 500

• 600

• 700

• 800

If 40% of a number is 20 , then 25% of that number is

• 12.5

• 25

• 125

• 80

'n' liters of oil was poured into a tank and it was still e% empty. How much oil must be poured into the tank in order to fill it to the brim .

•  $\frac{ne}{100+e}$ 

•  $\frac{100-e}{ne}$ 

•  $\frac{ne}{100-e}$ 

•  $\frac{100+e}{ne}$