# The most important 100 Math tricks for SSC CGL : Part 2/20

The most important 100 Math tricks for SSC CGL : Part 2/20

Q1. A man covered a certain distance at some speed. Had he moved 3 km per hour faster, he would have taken 40 minutes less. If he had moved 2 km per hour slower, he would have taken 40 minutes more. The distance (in km) is:

(a) 20

(b) 35

(c) 36

(d) 40

Q2. Two trains started at the same time, one from A to B and the other from B to A. If they arrived at B and A respectively 4 hours and 9 hours after they passed each other, the ratio of the speeds of the two trains was

(a) 2: 1

(b) 3: 2

(c) 4: 3

(d) 5: 4

Q3. Compound interest (com-pounded annually on a certain sum of money for 2 years at 4% per annum is Rs. 204. The simple interest on the same sum for the same rate and for the same rate and for the same period will be:

(a) Rs. 198

(b) Rs. 202

(c) Rs. 200

(d) Rs. 196

Q4. A builder borrows Rs. 2550 to be paid back with compound interest at the rate of 4% per annum by the end of 2 years in two equal yearly installments. How much will each installment be?

(a) Rs. 1352

(b) Rs. 1377

(c) Rs. 1275

(d) Rs. 1283

Q5. ABCD is a trapezium whose side  is parallel to  . Diagonal  and  intersect at O.If  = 3, = x – 3,  = 3x – 19 and  = x – 5,the value (s) of x will be:

(a) 7, 6

(b) 12, 6

(c) 7, 10

(d) 8, 9

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Solution : Watch video presentation by Baljit Dhaka

This series of Maths tricks contains 20 parts. Already 1 part is covered.

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The most important 100 math tricks for SSC CGL : Part 8/20