11 | On Childrenâ€™s Day sweets were to be equally distributed among 175 children in a school. Actually on the Childrenâ€™s Day, 35 children were absent and therefore each child got 4 sweet extra. Total how many sweets were available for distribution? | |

2400 | ||

2450 | ||

2680 | ||

None of these |

Let total number of sweets be x then,

(x/140) - (x/175) = 4

=>5x – 4x = 4 x 700

=> x=2800.

12 | A man has Rs. 480 in the denominations of one-rupee notes, five-rupee notes and ten-rupee notes. The number of notes of each denomination is equal. What is the total number of notes that he has? | |

45 | ||

75 | ||

60 | ||

90 |

Let number of notes of each denomination be x.

Then x + 5x + 10x = 480

16x = 480

x = 30.

Hence, total number of notes = 3x = 90.

13 | In a regular week, there are 5 working days and for each day, the working hours are 8. A man gets Rs. 2.40 per hour for regular work and Rs. 3.20 per hours for overtime. If he earns Rs. 432 in 4 weeks, then how many hours does he work for? | |

160 | ||

180 | ||

175 | ||

195 |

Suppose the man works overtime for x hours.

Now, working hours in 4 weeks = (5 X 8 X 4) = 160.

160 X 2.40 + x X 3.20 = 432

3.20 X = 432 - 384 = 48

x = 15.

Hence, total hours of work = (160 + 15) = 175.

14 | The price of 10 chairs is equal to that of 4 tables. The price of 15 chairs and 2 tables together is Rs. 4000. The total price of 12 chairs and 3 tables is: | |

3500 | ||

3750 | ||

3840 | ||

3900 |

Let the cost of a chair and that of a table be Rs. x and Rs. y respectively.

Then , 10x = 4y or y= (5/2)x

15x + 2y = 4000

15x + 2 x (5/2)x = 4000

=> 20x = 4000

x = 200.

So, y = (5/2)x 200 = 500

Hence, the cost of 12 chairs and 3 tables = 12x + 3y

= Rs. (2400 + 1500)

= Rs. 3900.