Q3. To cover a certain distance D in downstream, slower boat took 50% more time than the faster boat. If speed of slower boat in still water is 40% less than that of faster boat in still water then find the ratio of speed of stream to that of faster boat in still water.
(a) 1: 4
(b) 1: 5
(c) 2: 7
(d) 1: 3
(e) 3: 8
Q4. 5 years ago, age of A is 3 times of the age of B at that time. Ratio of age of B, 5 year hence, and age of C, 5 year ago, is 3 : 5. If difference between age of C and A is 10 years(C is younger than A), then find the age of B.
(a) 20 years
(b) 15 years
(c) 18 years
(d) 10 years
(e) 25 years
Directions (6 –15): Calculate the value of (?) in given question.
Q6. 115% of 4880 – 85% of 1640 = 740% of ?
(a) 570
(b) 1140
(c) 590
(d) 1710
(e) 285
Q7. 3251+ 587 + 369 – ? = 3007
(a) 1250
(b) 1300
(c) 1375
(d) 1400
(e) 1200
Solutions
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