61). The ratio of the ages of a father to that of his son is 5 : 2. If the product of their ages (in years) is 1000, then find the father's age after 10 yr.
| A). 50 yr |
| B). 60 yr |
| C). 80 yr |
| D). 100 yr |
|
62). A certain number is divided into two parts such that 5 times the first part added to 11 times the second part makes 7 times the whole. The ratio of the first part to the second part is
| A). 2 : 1 |
| B). 5 : 11 |
| C). 1 : 2 |
| D). 2 : 3 |
|
63). 35% of a number is two times 75% of another number. What is the ratio between the first and the second number, respectively?
| A). 35:6 |
| B). 31:7 |
| C). 23:7 |
| D). 30: 7 |
|
64). Brothers A and B had some savings in the ratio 4 : 5. They decided to buy a gift for their sister, sharing the cost in the ratio 3 : 4. After they bought. A is left with two-third of his amount, while B is left with RS. 145. Then, the value of the gift is
| A). RS.70 |
| B). RS.105 |
| C). RS.140 |
| D). RS.175 |
|
65). A bag contains an equaI number of one rupee, 50 paise and 25 paise coins. It the total value of all the coins is Rs.35, how many coins of each type are there?
| A). 20 Coins |
| B). 15 Coins |
| C). 25 Coins |
| D). 30 Coins |
|
66). What is the value of the least of the three numbers that are in the ratio of 4 : 3 : 7, if the sum of three numbers is 84?
| A). 24 |
| B). 18 |
| C). 42 |
| D). 36 |
|
67). The daily wages of two workers are in the ratio of 7. 8. 'If each of them gets a rise of Rs.40, then the ratio of their wages will be 8: 9. What are their respective wages before the increase?
| A). Rs.210 and Rs.240 |
| B). Rs.350 and Rs.400 |
| C). Rs.280 and Rs.320 |
| D). Rs.315 and Rs.360 |
|
68). The ratio between two numbers is 3 : 7. If the L.C.M of the two numbers is 147, then what' are the two numbers?
| A). 27 and 63 |
| B). 30 and 70 |
| C). 24 and 56 |
| D). 21 and 49 |
|
69). What is the least positive integer that when added to both the numerator and the denominator of the ratio 4 : 7 will make the ratio greater than 2 : 3?
| A). 0.67 |
| B). 1 |
| C). 5 |
| D). 7 |
|
70). If \( \Large \frac{a+b-c}{c}=\frac{c+a-b}{b}=\frac{b+c-a}{a} \), then what is the value of each ratio?
|
