Set up an equation in the following cases: Irfan says that he has 7 marbles more than five times the marbles Parmit has. Irfan has 37 marbles. (Take m to be the number of Parmit's marbles).

Set up an equation in the following cases: Laxmi's father is 49 years old. He is 4 years older than three times Laxmi's age. (Take Laxmi's age to be y years).

Set up equations and solve them to find the unknown numbers in the following cases: Munna subtracts thrice the number of notebooks he has from 50, he finds the result to be 8.

What is the probability of getting a white marble from a jar which has 3 red, 7 green, and 10 white marbles ?

Set up equations and solve them to find the unknown numbers in the following cases: Anwar thinks of a number. If he takes away 7 from 5/2 of the number, the result is 23.

A factory makes tennis rackets and cricket bats . A tennis racket takes 1.5 h of machine time and 3 h of craftman's time in its making while a cricket bat takes 3 h of machine time and 1 h of craftman' time . In a day , the factory has the availability of not more than 42 h of machine time and 24 h of craftman's time (a) What number of rackets and bats must be made, if the factory is to work at full capacity? (b) If the profits on rackets and on bats is Rs 20 and Rs 10 respectively , find the maximum profit of the factory when it works at full capacity .

Answer the following: (d) Meena, Beena and Leena are climbing the steps to the hill top. Meena is at step s, Beena is 8steps ahead and Leena 7 steps behind. Where are Beena and Meena? The total number of steps to the hill top is 10 less than 4 times what Meena has reached. Express the total number of steps using s.

Change the following statements using expressions into statements in ordinary language. (For example, Given Salim scores r runs in a cricket match, Nalin scores (r +15) runs. In ordinary language-Nalin scores 15 runs more than Salim.)(b) Tony puts q marbles on the table. He has 8 q marbles in his box.

A man has three friends. The number of ways he can invite one friend everyday for dinner on six successive nights so that no friend is invited more than three times is