Let’s learn how to convert a situation into an expression.

First

we find variable in our situation

and then make an expression.

 Situation Variable Expression Sarita has 10 more marbles than Ameena. Let Marbles with Ameena = x Marbles with Sarita            = x + 10 Balu is 3 years younger than Raju Let Raju’s Age = x years Balu’s age        = (x − 3) years Bikash is twice as old as Raju. Let, Raju’s age = x years Bikash’s age   = 2 × 𝑥         = 2x years Raju’s father’s age is 2 years more than 3 times Raju’s age. Let Raju’s Age = x years Raju’s father's age        = (3x + 2) years How old will Susan be 5 years from now? Let, Susan’s Age = y years Susan’s age after 5 years        = (y + 5) years How old was Susan 4 years ago ? Let, Susan’s Age = y years Susan’s age 4 years ago      = (y − 4) years Price of wheat per kg is rupees 5 less Let,  Price of rice per kg = p Rupees Price of wheat per kg       = (p − 5) rupees Price of oil per litre is 5 times the price of rice per kg. Let,  Price of rice per kg      = p Rupees Price of oil per litre = 5p rupees The speed of a bus is 10 km/hour more than the speed of a truck going on the same road. Let, Speed of truck   = y km/hr Speed of bus = (y + 10) km/hr Ali has twice as much apps as Nandan do. Let, Number of apps with Nandan = x No. of apps with Ali = 2x Rajshri has got 3 more certificates than Kamal. Let,  No: of certificates that Kamal has = x No: of certificates that Rajshri has   = x + 3 Anthony has 10 toys less than Kabir Let, Number of toys with Kabir = x Let, Number of toys Anthony have = x - 10 Sumit's weight is one-third of his grandfather's weight Let, Weight of Sumit’s grand father = w Weight of Sumit   = w/3
1. Chapter 11 Class 6 Algebra
2. Concept wise
3. Statements to expressions

Statements to expressions 