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  1. A
    `Rs. 1750`

    B
    `Rs. 1680`

    C
    `Rs. 1840`

    D
    `Rs.1443.75`

    Explanation: `p.w. = Rs.((100 xx 2310)/(100 + (15 xx 5/2))` `= Rs. 1680.` 

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  2. A
    `Rs. 768`

    B
    `Rs. 968`

    C
    `Rs. 1960`

    D
    `Rs. 2400`

    Explanation: p.w. = (100 xx T. D.)/(R xx T)` `= (100 xx 168)/(14 xx 2)` `= 600` :. sum = (p. W. + T. D) `= Rs. (600 + 168)` `= Rs. 768.` 

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  3. A
    `12%`

    B
    `13 1.3%`

    C
    `15%`

    D
    `14%`

    Explanation: p.w = Rs. (2562 - 122)` `= Rs. 2440. `:. S.l. on Rs. 2440` For `4` month is Rs. `122`. `:. Rate = ((100 xx 122)/(2440 xx 1/3))%` `= 15%` 

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  4. A
    `6 months`

    B
    `8 months`

    C
    `9 months`

    D
    `10 months`

    Explanation: `p.w. = `(1760 - 160)` `= Rs. 1600` `:. S.l. on Rs. 1600 at`12%` is Rs. 160`. `:. Time = ((100 xx 160)/(1600 xx 12))` `= 5/6 years` `= (5/6 xx 12) months ` `= 10 months 

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  5. A
    `Rs. 1386`

    B
    `Rs. 1764`

    C
    Rs. 1575`

    D
    `Rs. 2268`

    Explanation: Let p.w. be Rs. x. Then, S.l on Rs. x at `16%` for `9` months `= Rs. 189.` `:. x xx 16 xx 9/12 xx 1/100` `= 189 or x 1575.` `:. P.W. = Rs. 1575.` `:. sum due = P.W. + T.D.` `= Rs. (1575 + 189)` `= Rs. 1764.` 

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  6. A
    `12%`

    B
    `14%`

    C
    `15%`

    D
    `16 2/3%`

    Explanation: S.l. on Rs.`750 T.D. on Rs. 960.` This means p.w. of Rs.`960. due `2` years hence is `Rs. 750.` `:. T.D. = Rs. (960 - 750)` `= Rs. 210.` Thus, S.l on Rs.`750` for `2` years is Rs.`210` :. Rate` = ((100 xx 210)/(750 xx 2))%` `= 14%` 

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  7. A
    `Rs. 1800`

    B
    `Rs. 1450`

    C
    `Rs.1360`

    D
    `Rs. 6800`

    Explanation: Sum`= (S.l. xx T.D.)/((S.l.) - (T.D.))` `= (85 xx 80)/(85 - 80)` `= Rs. 1360.` 

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  8. A
    `Rs.20`

    B
    `Rs. 21.81`

    C
    `Rs. 22`

    D
    `rs. 18.33`

    Explanation: S.l. on Rs.`(110 - 10)` for a certain time = Rs.`10` S.l on `Rs.`100` for double the time `= Rs. 20` T.D on `Rs. 120 = Rs.(120 - 100)` `= Rs. 20` T.D. on ` Rs. 110 = Rs. (20/ 120 xx 110)` `= Rs. 18.33.` 

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  9. A
    `Rs. 12000` in cash

    B
    `Rs. 128880` at credit

    C
    Both are equally good

    Explanation: `p.w. of Rs. 12880`due `8` months hence `= Rs. [(12880 xx 100)/(100 + (18 xx 8/12)]` `= Rs. ((12880 xx 100)/(112))` `= Rs. 11500. cearly, Rs. `12000` in cash is a better offer. 

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  10. A
    `16 2/3%`

    B
    `14 1/2%`

    C
    `13 1/3%`

    D
    `15%`

    Explanation: S.P.`= 102%` of `Rs. 600` `=Rs. (102/100 xx 600)` `= Rs. 612` Now, P.W.`= Rs. 612` and sum `=Rs. 688.50.` :. T. D. = Rs. (688.50 - 612)` `= Rs. 76.50.` Thus, S.I. on `Rs. 612` for `9` months is `Rs. 76.50.` :. Rate`= ((100 xx 76.50)/(612 xx 3/4))%` `= 16 2/3%`. 

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