Question

Solve the following:
(i) Irfan says that he has 7 marbles more than five times the marbles Parmit has. Irfan has 37 marbles. How many marbles does Parmit have?
(ii)  Laxmi’s father is 49 years old. He is 4 years older than three times Laxmi’s age. What is Laxmi’s age?
(iii) People of Sundergram planted a total of 102 trees in the village garden. Some of the trees were fruit trees. The number of non-fruit trees was two more than three times the number of fruit trees. What was the number of fruit trees planted?

Answer 1

(i) Let the number of marbles Parmit has be m.
According to the question,  5m+7=37 
 
Thus, Parmit has 6 marbles. 

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(ii) Let the age of Laxmi be y years.   
 Then her father’s age = (3y+4) years
According to the question,  3y+4=49

Thus, the age of Laxmi is 15 years. 

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(iii) Let the number of fruit trees be t
Then the number of non-fruit tree = 3t+2    
According to the question,  t+3t+2=102

Thus, the number of fruit trees are 25.