DIRECT AND INVERSE PROPORTION

1) If ‘x’ and ‘y’ are in a direct proportion then which of the following is correct?

• (i) x – y = constant

• (ii) x + y = constant

• (iii) x × y = constant

• (iv) x/y = constant

Tags

CCSS.HSF-LE.A.1B

If an increase in one quantity brings about a corresponding decrease in the other and vice versa, then the two quantities vary:

• (i) directly

• (ii) inversely

• (iii) sometimes directly and sometimes inversely

• (iv) none of these.

If x and y vary inversely. Then using the following table?

The value of x for y = 10 is

• (i) 10

• (ii) 40

• (iii) 15

• (iv) 20

If ‘A’ can finish a work in ‘n’ days then part of work finished in 1 day is:

• (i) 1 – n

• (ii) 1/n

• (iii) n – 1

• (iv) none of these

Tags

CCSS.HSA.CED.A.1

If the weight of 12 sheets of thick paper is 40 grams, how many sheets of the same paper would weigh 2500 grams?

• A. 750

• B. 800

• C. 850

• D. 950

Tags

CCSS.6.RP.A.3B

If 12 workers can build a wall in 50 hours, how many workers will be required to do the same work in 40 hours?

• A. 10

• B. 13

• C. 14

• D. 15

Tags

CCSS.6.RP.A.3B

15 books weigh 6 kg. What will 6 books weigh ?

• (a) 1.2 kg

• (b) 2.4 kg

• (c) 3.8 kg

• (d) 3 kg.

Tags

CCSS.6.RP.A.3B

If x = 20 and y = 40, then x and y are:

• (a) Directly proportional

• (b) Inversely proportional

• (c) Neither directly nor inversely proportional

• (d) cannot be determined

If x and y are inversely proportional, then:

• (a) x + y = constant

• (b) x – y = constant

• (c) xy = constant

• (d) x/y= constant

A milk factory of tetra pack fills 1200 bottles in 4 hours.How many bottles will it get filled in 3 hours?

• (a) 900

• (b)780

• (c)1050

• (d)1000

Tags

CCSS.6.RP.A.3B